This thread is full of negativity and doesn't really seem logical.
Uhm... What do you think you'd be doing if you were 15 or 16? Probably on YouTube, or playing videogames, or studying, or whatever... It's seriously overrated to be a teenager, specially in this new age where there's so much entertainment indoors that it's pointless to go outside.
I struggled with dysphoria when I was a child, but I didn't have it much as a teen. I had feminine leanings but got away with wearing make-up, shaving my legs, having long hair, so I don't really feel like I missed all that much during my teenage years... I can't think of a single girl that I was jealous of while I was a teenager. They seemed boring, quiet, shallow and introverted, whereas guys would laugh a lot more and seem lively.
I grew up with a pretty big group of friends, both boys and girls hanging out together. We identified with punk/metal stuff, so there were plenty of things we could get away with and I didn't feel that much of a difference between boys and girls' "roles". We went to see music shows together, we went to clubs and bars... and those were the most interesting "social events" we had. Nothing stopping me from doing that now. Is it sleepovers with girls that you miss? I don't know if they're all that cool, I had sleepovers with the guys and we didn't even talk about girls... more like getting into trouble and doing fun stuff.
Facebook didn't exist back then but we had other social networks (hi5 and myspace)... I don't recall ever complimenting a girl or initiating a relationship, but they did, so it was like the gender roles didn't exist? I got to look good and didn't care what other people looked like, I did what I wanted with both guys and girls, being loud, being childish, pranking school staff, getting grounded (got expelled from one school at 14), so I really can't see the appeal in being a teenage girl over a teenage boy. Hell, we even wore the same things... Converse shoes, ripped jeans and a black shirt or hoodie. Guys don't even care all that much about you at that age, sorry to say, so relationships are pretty dull and futile. I wouldn't go back to live as a girl... I want to date men, not boys.
You have no freedom, you depend on your parents... if you feel like you can't express yourself in your 20s and only care for being younger than that, then I think you'd be living a pretty boring life. Dysphoria only hit me later, to be honest, once that group of friends kind of washed away and we all found ourselves living apart and in different colleges. There's when I first started to notice gender roles, not as a teenager. I cut my hair to blend in, I started having to dress in more formal clothing, people looked like men and women, not boys and girls... so that sucked. I only started feeling like I was a sexual being at that age, so it was also bad... I realised I didn't want to feel "male" in a relationship, I fell in love with a straight guy, and well... that set it all off. That's when I started to be jealous of women (regardless of their age). But during teenagehood I didn't really feel it... I didn't care for what I was, I didn't feel like a girl or a boy, I felt like me. That's still what I feel like... I feel like me... But I don't think that I can blend into society and be me while living as a male, because I started being unable to relate to people around me, I became an introvert, fell into depression... and decided to transition.
The grass is always greener on the other side, but being a teenage girl can't be all that different from being a teenage boy. You're trying to find yourself, you don't know what you want, you like getting attention... Maybe it's a cultural thing? Like, there's 3 times more MtFs in the US than FtMs, but out here there's 3 times more FtMs than MtFs. Maybe gender roles are more of a thing over there, I don't know... I feel like I'm missing out on my life now, I feel like these are my good years, but as a teenager not really, was pretty oblivious to what gender roles even were, lol.
