It depends on the things; if they're self-destructive, destructive, misanthropic, and anti-social, then no. Don't be a bully if your friends are bullies, don't follow them to their oblivion if they are self-destructive (by all means help them but don't ruin your life for them), don't hurt others because they also hurt others, etc.

For all other things, it's fine. Just try not to be invested into it so you don't become bored.