i get bored too, although i don't know how much more i'd enjoy WOH... i've not really loved any of the jobs i've ever had and generally feel really burnt out and done by the end of the week. at least at home i can do things at my own pace and take a few down days if i need to. i feel your frustration on the houswork though. my husband sometimes seems to assume that i can get everything done during the weekdays, errands and cleaning and all, and while he's not snarky about being asked to help out, he definitely doesn't understand the time-suck that can be a 6 month old baby (or that taking care of our kid is the full time job i'm doing... housework is still a shared task in my opinion)!
i think you have to forget about finding excuses to go somewhere sans baby, and just do it. i often don't do the groceries or whatever during the day, just so i can go do them at night alone. we can't really afford for me to get massages or go to yoga (although they're partly covered by our insurance, it's definitely in the "indulgence" list) but i go anyway, because a couple hours away from baby is good for me, and good for my husband too, because otherwise i don't know if he'd ever take the initiative to take her off my hands.
i haven't totally solved the problem of being bored at home. i try to get out as much as possible during the week, although with the really hot weather in the summer, it can be really exhausting to even think about loading us up in the car and going somewhere. a few weeks ago, i reached my breaking point and got really agressive about making some friends... i joined two play groups and went to a bunch of workshops, and tah-dah! i now have a few people to hang out with on a regular basis. that really helped with the boredom, as has making a real effort to work on my particular artistic interests when i have the chance.
anyway, i don't think you should feel bad about not liking being at home. it's not for everyone. i don't think you should worry about being constantly "on" for your baby either... 6 months seems to be kind of a weird age anyway. my baby is much more volatile than she was before; the tantrums and giggles seem to follow each other without rhyme or reason, and things that held her attention before don't any more. obviously, i want to engage her, but not to the point of turning myself into a 24-hour entertainment unit... i have interests and needs too, so i do try to balance it.