Collecting friends?

Seriously people, why do you need so many facebook friends? I don't understand. Some people they can have over 2000 friends on facebook and yet they only know about half of them. What's the point of it then?
I don't know what people do with 2000 over friends when i can hardly even keep up with 200. 
Do they feel proud that they have "collected" so much friends that it looks like they're super popular? Yes, collect! It looks to me like some people on facebook collect friends rather than make friends. They don't talk to them, they don't follow their activities, they don't even greet. Never. Just click the accept button and that's it. So, what's the point?
I have 200 friends and i need to unsubscribe from some friends because it's spamming my wall. I don't even know what some are talking about. And these are the people i'm suppose to know.
Yeah, so they call it social networking. You make friends with people all around the world. But seriously, we don't just talk to random strangers and make it sounds like you guys know each other personally. You just can't. At first maybe you can talk about some mutual interest and do introductions. After that, there's just awkward talk. And i get so uncomfortable telling people from abroad about myself and about my country, I'm always not sure what to say and what not to say. It gets creepy when they start to be more "intimate". So in the end, you just stop talking to them then they'll eventually "disappear" into your facebook friend list. After a while, you need to delete them from the list anyway. What's the point then? I got request from people i don't know and if i accept them, we never talk anyway.
I guess it's like a trend to collect friends, especially those attention seekers. They just want the likes and random comments. Oh, don't forget the pride of looking like they're popular. Sure, 2000-3000 friends does make you look like you've been all around and making lots of friends and you're a "sociable" person. Well, i can't judge you, you know it yourself. 
C'mon people, if you're so eager for so called "friends" then go to Twitter. There, any random stranger can follow you and talk random stuff. 
As for me right now, Facebook is really purely for communicating with people i see every now and then, people i personally know and I want to keep up with them. It's also for me to save up on my phone bill. Those acquaintance i mostly ignore. If they keep posting stupid stuff, i simply unsubscribe from their post but well, we still remain facebook "friends". In case there's any need to communicate with them. Those i personally don;t know, well, they are at the corner of the most dusty place in my friend list (if there is a dusty corner). I can't imagine myself with more than 300 friends even. How many new people am i going to meet anyway after this? I'm a bit of a hermit and I'm in university and this is a place where you socialize the most. Still....