Well, I'm looking forward to this time because I'm hoping to be giving birth unassisted. That is what sounds the least scary to me. I've had 2 crappy hospital experiences. With my first child it left me with a year of recovering over a stupid episiotomy I'm certain I didn't need and I was also encouraged to take pitocin during the birth because I was laboring too slowly for their schedule.
The second one was downright traumatic not because of labor and delivery but because of the doctor interfering at the end and they took my baby away for 14 hours and left me alone in a room after giving me a d and c because I was starting to hemmorage due to them being really forceful about getting my placenta out quickly.
So, anyway, I understand why you want to make sure someone is there to help you through your birth but I'm glad no one will be there at mine. I've had 2 uncomplicated deliveries in reality. Any "complications" were caused by the interferences from the doctors.
Really though, although childbirth is painful. (I was feeling painful contractions before I went into labor for a couple weeks off and on.) I think it is absolutely worth it. I think the best thing is to try to stay calm and I think there is a level of control over how we react to any pain we may feel. I think we can really intensify the feelings of pain when we focus to much on how painful we think it is. I think it's better to distract yourself somehow and just keep in mind that you will have a beautiful little one in the end as your encouragement to get through it. I felt really good about my labor and even about pushing which I started on my own the second time around. I was in a hands and knees position til they flipped me over against my will at the end. I really think that positioning helped a lot with the pain. The most painful parts of the birth for me were transition which is to be expected but thankfully doesn't last that long and then the d and c was pretty horrifying.
I'd try staying upright during labor and delivery. That really helped me a ton. And this time around I plan to have music, to try to play with my kids and to keep up conversation with my husband and maybe I'll even call my friends during as a distraction. So there you go, distract yourself from the pain, try to keep a positive outlook despite your past experiences and keep in positions that help move things along and help with pain relief.