Ive booted 80% of my friends. Its pretty hard to relate to them from a work point of view, many grow spiteful and "hate".
I find its much better to have 3-5 really good friends as apposed to 30-40 half ass friends. I used to be the guy everyone called on friday /sat night for something to do. I would often be rolling with a crew of 30ish people into bars ect. I knew them, but not a real close level. Maybe there's just not time for that anymore, maybe im getting old, either way I prefer to keep it small now.
I don't really regret anything though. I could go out tomorrow and start being super outgoing again, not for me, no regrets.
I'm the same way. I literally have 5 really good friends and that's it. I have other "acquaintances", but not people that I choose to be around on a regular basis. My good friends I've known for a long time and I'll do anything for them, but everyone else has been kicked to the curb, and that includes some family that I just don't have time for their drama anymore. My life is much better without negative assholes, friends & family, trying to bring me down to their level. I just want to do my thing, with my wife & kids and close friends, that's it. Haters can hate. Half ass friends who don't show any respect can get fucked.