As someone who's networking skills has to run full blast all the time to keep up with other artists, my projects, their projects, baby shaking and hand kissing, and the various activities, charities, and run about that I do on a daily basis just to keep myself in the loop, and my pockets full with enough cash to make it to tomorrow, any time I have to be alone, that isn't filled with sitting at my art desk pounding my head against Bristol board in hopes art happens, is so rare and beautiful that I must take full advantage of it by ignoring everyone.
When a friend vanishes for an artist, they're either dead, on hiatus, or so engrossed in their own projects that they forget things, like bathing and people, and general people skills, but after that deadline passes they tend to come back to life and reconnect so it's nothing to much.
Sung-Hwan, that feeling you have now is going to get worse as time goes by. Every year your friends will become "friends" as in you can remember them and maybe see them once a year. It happens to all of us as we get older, and it's just what happens, but don't feel sad, because something is going to come along soon that'll make you forget this problem completely...
Responsibility!
Yes that's right, soon the hands of responsibility will ring you out for every last drop of time, money and fucks you can give. Leaving you to a husk of an adult, and placing you in a world where what your friend does is not nearly as important as where you put the electric bill. As time goes by you'll find yourself without the time to spend doing things like watching anime, and will have to pick and chose specific shows to watch through out the year because you can't see everything, becoming less and less informed until you're so far out of the entertainment loop that everything is alien to you.
That leads us to stage three, the nostalgic old man, where you have the time and cash to spend on stuff again, but everything is so different now that all you want to do is buy up the stuff you remember as a child because at least that makes sense. So you grab those dvds of 90s anime and shows because you feel comfortable with the purchase and can't take the risk. Also, anime shows worth it will have been digitally downloaded into your kid's head, and you couldn't afford to get the chip, having spent all your money raising the little buggers.
Then you'll get to watch your friends, the two or three you still had in touch with, grow old and die.
Wait, what was I talking about again? Oh, right. Dude, either apologize because you want to keep them as a friend regardless of ideology, or understand that these things happen, paths change, and you should look into new friends. These things happen, and it sucks, but it'll get better if you step back and get out every once in a while. Better yet, it'll help strengthen you to get along better with people in the long run. (Going back to learning to deal with the masses thing from before). If you care, show them it.
Or, you know, the paragraphs before this one'll happen to you first. Whatever. I'm going to go pay my internet provider, electric, water, gas, sewage, car insurance, health insurance, car payment... rent.. buy groceries.. pay netflix..