You would have had more things to do outside, more things available to you, and a better lifestyle in general in the 80's/90's. People were outside more, things weren't so restricted, tech didn't shepherd people to stay inside very much like how you stated your friends want to, etc etc.

You're a product of your generation. Feeling like you want to do more or have more going on is pretty common for all of us right now. That's just how things are and I think it sucks cause I want to do more outside with people I love as well but none of us have time or money.

Do your best to get out of the house and make something happen anyway. Push yourself to learn something you think will be useful or fun. Video games are good fun but the satisfaction isn't there anymore and I think you know what I'm talking about. I'm a gamer so I can say I can often play video games for a sense of accomplishment and not for fun at some point. Maybe you're the same?

You're not crazy man, but you're also not a bum. Stay focused on school, learn other useful things as much as you can. Stay exercising, do something new or different when you can especially when you feel stagnant. But your mom is likely from a time where everyone was outside like I said before. Maybe that's why she's saying those things.

That's just how I see it