It's already tough enough, so no sense in making it harder for yourself and others.
If people aren't worth your time being kind to them, then don't waste your time being unkind to them.
Enjoy something you enjoy whenever you've a moment to enjoy it.
Sometimes you might have to make that moment.
Remember you have just as much right to be here & doing what you please as anyone else (as long as it's not hurting others).
Just ignore those who tell you otherwise.