I was 17 when I had my eldest, so I can relate. After the divorce, I did feel a little resentful. He wanted the kids, and then when we separated, he didn't want them anymore and my teenage years were gone. I was 20, with 2 kids 24/7 and while I loved my kids to death, I still longed to be like other 20yos.
I really can relate to how conflicted you must be feeling right now.
The only thing I can tell you is - this too shall pass.
There is a lot of fun to be had without going out on a saturday night, and I found that once I found 'Mr Right', any and all desire to go out and party or have this massive social life faded into the background. My DH is forever worried that because I never had it, I will regret it all later and might blame him, so he is forever offering to watch all the kids while I go out with my sister or find some friends. I don't want to go anywhere if he isnt going too. Its not the place, or the activity - its the people, and he and the kids are my people.
I hope you get to find your "happily ever after" sometime soon too.