I don't wanna live past 25 .I mean I will not be considered young anymore and treated and seen like a old person.I mean...

You don't have to live a certain way just because you're a certain age... I wish people didn't have such a negative view of it... if you keep thinking you'll be fat, unhappy and spend all your time working once you hit a certain age, guess what? You'll probably end up like that. Change your perception.

they must. or they will kill themselves.

You can do whatever you want tbh.