I don't understand why it matters how old someone is or what pisses them off. This is the "What pisses you off thread." Not the "What IRL serious issues that only adults deal with piss you off?" It pisses me off when people call Cloud emo as well, but that doesn't mean that I don't have worse issues in life.
Also, Lunar, at age 15 my life was pretty shitty too. I actually have memories I've sorta regressed from that period. I remember being pretty miserable, but IMO my life actually got better as I grew older. So uhm yeah just because your life sucks at a young age doesn't mean it can't get better.
So yeah being 15 knowing what I do now, sure I'd do that... living my actual 15th year again?... no thank you.