What has been your experience of friendships after LO(s)? Are you the first, last, or somewhere-in-between in your circle to be a parent? Do you think that has an affect on said friendships?

Amongst our circle of friends, we were the first to become parents and while I swore before DD came along that having a kid won't change things, it sadly seems like it has. DD's bedtime is 8pm latest and while we break the rules a handful of times a month, we really try to stick by it because it just seems cruel to sacrifice her sleep so we can stay out. Even when we do go out, it's never more than 2 hours past her bedtime and we end up paying for it for a day or two. Granted our friends don't have experience with healthy bedtime habits for toddlers and such, it does get frustrating when I always get "Why can't you just bring her out? She doesn't need to sleep that early!". Well, she does need to sleep that early and I have tried pushing her bedtime later, but sleeping later doesn't mean she gets up later (another one I always hear!). I just feel like they don't really understand and I know I can't expect them to, but it does frustrate me that I can't go out and that it makes me seem like a psycho mom. And the whole not getting out as often makes it seem like I'm sacrificing my friendship. I wish I was super mom AND super friend. =P

Any advice on how to keep up friendships while juggling a LO?