Just picking apart your senseless argument:
1. Pretty girls are constantly surrounded by people who want to be with them just for the looks and not for their personality or intelligence. Therefore less attractive people are always out to get them with their ulterior motives.
You make it sound as if pretty girls are idolised. They are not. I've never met anybody who's said 'oh, hey, look- there's a pretty girl. I want to be her friend'. In a friendship, personality means a heck of a lot more. Perhaps you go to a supremely shallow school?
2. Difficult to form friendships with other girls. I cannot stress this point enough, often you'll notice average girls hating on beautiful girls. They're jealous and they are threatened by a female who is superior in every possible way. So it can be a lonely world if you're pretty.
.... Or maybe they hate them because they're utter morons, like you seem to be. What is with this elitist attitude? What makes you think you have the right to deem others 'less attractive' than you? Why is there an 'us' and 'them' thing going on here?
'Threatened by a female who is superior in every possible way'. Oh, please. Being pretty does not make you superior in every. You could potentially have superior aesthetic features, but that's where the superiority ends. These so called 'average girls' could be mathematical geniuses or musical prodigies. In that respect, they're far superior to you. What makes you think are 'superior in every single possible way?'. It just makes you seem like a ****, if you ask me.
3. In the same ilk insecure guys will label pretty girls as sluts or whores simply because they've been rejected one time too many by a pretty girl.
No comment on this one- guys can be idiots sometimes.
4. It can be hard to find someone as pretty as you so you might have to compromise on looks more often than not.
You are extremely shallow. 'Compromise'? You disgust me, honestly.
So, what I've gathered from OPs post:
1) She has an extremely elitist attitude as she thinks she's pretty
2) she looks down on others she deems to be 'less attractive' and labels them as being inferior to her
3) To her, prettiness seems to be the most important thing. Therefore, I can conclude that she seems to be extremely shallow.
4) She is reluctant to form friendships with people she thinks are less attractive, further reinforcing point 3.
I don't know whether I'm pretty or not, and I honestly don't care. How attractive you are should not define you. I'd rather be ugly and intelligent than pretty and shallow as OP seems to be.