Spend one hour with someone who's 90 that's not your grandpa or grandma. One hour, really chop with them. You'll realize that everything you complain about is nonsense. When you're 90, you just wish you spent more time with people you loved. And you wish you did shit you liked.
You're going to be dead forever and you weren't born for a long time. And so in this little window that all of us have, why not try to fight for enjoyment?