Used to be a supporter of the "I have my 2 close friends, fuck everyone else" movement until my mom sat me down and had a "heart to heart" so to speak.
She told me this: You are happy right now, because you are of a age where it's still easy for you to meet new friends if you have to.
When you're older and the few good friends you have are dead. That happiness turns into regret.
Use the time you have, to make as many good friends as possible, you won't always have the opportunity. (She's a 70 something introvert)