Is it wise not to have any friends?

Sure, why not?

(* What? How can that be right? *)

Thanks for asking, imaginary inner dialogue.

If you don’t want friends, you shouldn’t have any. This decision does not necessarily make you a misanthrope or an unfriendly person. Maybe you’ve tried friendships out before and been burned by assholes, users, and abusers. This scenario doesn’t just happen in romantic relationships, after all. Maybe you need some time alone to figure out how to choose and keep better prospective friends.

Maybe you really enjoy your own company, are very self-sufficient, and don’t see the need. You shouldn’t have friends just because everyone else thinks you should. This type of cultural pressure is what used to be more frequently applied to unmarried individuals and couples without children. “Well, everyone else seems to have friends / lovers / spouses / children” is shitty logic and coercive as fuck.

Maybe you’re not that generous and wouldn’t be a very good friend to potential friends.

And friends, even good ones, can often be trying and exhausting as hell. Maybe, right now or routinely, you just don’t have the energy to manage someone else’s feelings and emotions other than your own.

“Is it wise … ?” Who knows? Possibly in your particular situation? Your question suggests people without friends will be in some future quandary and need help that won’t be forthcoming. Here’s a little secret: even good friends may not be able to provide you with the help / understanding / support people assume friends will provide.

You know you better than we ever will. Have friends if you want them, but not just as some sort of unpaid disaster insurance.