Bon-
I understand your grief for not ever having a girl. I have a 17 mo old boy, and will be having another baby boy in less than 2 months. DH and I had already agreed that despite the sex of the second baby, it would be our last (he plans to have a vasectomy a few months after our last baby is born). Soooo, it looks like no DD for us.

I have mixed emotions about this. At first I was a little upset, b/c I never had a great mother-daughter relationship with my mom, never had a sister (had two younger brothers, plus being the oldest AND being a girl sucked, my parents wouldn't let me do anything), I have a miserable relationship with my mil, b/c she is weirdo, and always hung out more with a group of girlfriends, instead of having one best girlfriend. So, all my life, I had looked forward to the opportunity to raise a daughter, hoping to have a close girl-girl, doing girly type things, like shopping, chit chatting, doing crafts, etc. type relationship. Maybe my reasons are selfish, I mean you never know, if I had a DD maybe we'd be like oil and water and not get along at well, and I am sure I would end up being disappointed and sad about the situation, since I have such high expectations. However, I guess I have more of a tendancy to feel like I am, "missing out" more than anything.
There are also many days though that I rationalize how nice it would be to have my 2 boys and not have to worry about a girl too. I know that teenager girls can be quite dramatic and trying, and omg if I had a teenage girl who wanted to wear trampy clothes and ran with the wrong crowd, I know I would freak out... I guess I would worry more about a girl than a boy. I also KNOW if I had a girl, we'd be spending a lot more $ on her clothes, etc.. I remind myself, that with two boys, esp so close in age, they will be great playmates, hopefully best friends, clothes can be re-used, they will have similar interests in toys/activities/friends, etc. and in general I've been told that boys tend to be easier to raise compared to girls. Of course, I also think that my house is going to turn into a hellhole with two boys that are rough and tumble and I sometimes get jealous that they will have this wonderful father-son relationship (my DH is a WONDERFUL father, and he is the, "fun" one, I have no doubt my boys will prefer him over me, it is even obvious now with my toddler), and I'll just be the person they go to for food, laundry, $, etc..
My mil had two boys and she has HORRIBLE relationships with other women (in fact, she told my sil and I how HAPPY she was she did not have a girl, b/c she thinks they are a pain... nice huh?), and I can't help but feel like I could end up down a similar path as her. Being the overbearing mama's boy mil, and always stepping on my dil's toes, thinking my boys are the most perfect angels and blaming everything on the dils, etc.. She is the mil from hell and it really bothers me for some dumb reason that we have this similiarity (both having 2 boys... esp after she told my sil how, "PUUUURFECT" it was to have two boys and we must both have two boys just like her... sil has a boy and girl and mil treats the girl like a 2nd class citizen), b/c I don't want to have any similarities to her at all, I despise my mil. Anyway, I am so hung up on this, I don't know why... guess I am scared of being my mil. I just HOPE that I DO end up with wonderful dil's and since I won't be having my own DD's, I can have as close of a DD type relationship with my FDILs when the time comes. I guess if anything I am more worried about having a bad relationship with my FDILs than anything, which scares me, b/c I really long for a nice mother-daughter relationship, and I feel like it will be kind of my, "last chance" to fulfill that kind of relationship, and if I don't get along with my FDILs, then basically it is a dream lost.
Anyway, just wanted to let you know, you are not the only one who struggles with these types of feelings. Everyday, my feelings change. Sometimes, I'm happy at the thought of having 2 boys. Sometimes, I get really sad, feeling like I'm missing out by not having a daughter and honestly, I am more the type who would have been perfectly happy having all girls and no boys... never imagined myself in this situation though (all boys, no girls). I hope that when my brothers have kids, they have at least one girl, so maybe I can have a nice aunt-neice relationship and I will be the, "fun" aunt to hang out with.

Also, I do get jealous feelings too, like you do. My sil always talked about how much closer she is to her DD than her DS (she wasn't trying to make me feel bad, she's told me about this before I even had my first son), she never thought it was possible. I have also run into many other women who keep undermining me even more after finding out this second baby is a boy, by giving me that, "sad" look, and saying, "well, *maybe* NEXT time it will be a girl." When I tell them there won't be a next time, this will be our last baby, they just kind of give me, "uh-huh, you just wait" type reaction. I don't want to ttc #3, JUST in order to get a girl, I know a lot of ppl who do this, end up with another boy and get REALLY upset about it and I don't want to be like that. I guess I feel that if we ttc, it should be neutral feelings, being happy if it ends up a boy OR girl. Plus, pregnancy and I do not mix well together, I have horrible pregnancies (m/s and vomiting throughout the ENTIRE pregnancy and this time I've had such bad back pain, I've been hobbling around and now going to physical therapy), which is another reason why DH and I decided to stop at two. I guess some ppl would say I'm being selfish about the whole pregnancy thing, but the more I think about it, the more I think that 3 kids would be too much for us, and we'd just be happier with 2, so I don't want to do the whole ttc #3 JUST to get a girl, and then not get a girl and end up feeling resentful.