I have had several very close friends forever, and a lot of work friends that I like, but don't do things with. I've never had trouble making friends, but a couple of years ago, everything started changing. Friends started moving away, divorcing, getting busy and starting new lives. My kids were getting older, and I actually had time to spend with friends, but no one was around. I didn't want to write off my long-time friends, but I wanted some new friends that would have time to spend with me, too.
I didn't really want to talk about school all the time (I'm a teacher), so I wasn't looking for closer friendships there, other than the close friends I already had there. Instead, I looked at my sons' schools. Like you, I didn't find many of the moms very friendly, but I persevered.
At open house last year, one of the moms in my youngest son's class seemed somewhat friendly, and my son liked her son. I decided to see what she was like. I didn't stalk her, but I did try to talk to her at school functions. She was nice, and we had some similar interests. By semester's end we were meeting up with the boys from time to time and getting to know each other better.
We both ended up getting waterpark passes for ourselves and our boys, and bonded over the summer. Sometimes we even got together without the kids, and tonight we're going out for dinner without kids.
She's younger than me by about 5 years, but like you, I feel age is just a number. I felt like you did. I wanted friends to do things with, and I made it my mission to find some. It worked. I also ended up playing in a keno group once a month with some teachers from several local schools. That has been great, too!
Stick with it, and you will find friends. What I discovered is that sometimes it's not that the moms are unfriendly. They just don't always know that you want to talk to them. Then again, some of them are unfriendly. ;)
I wish you lived a bit closer. I would love to meet you. :)