Is it normal that i sometimes hate my best friends?

So I have a group of girlfriends who I would consider my best friend; I've known them for around 7 years (and in case it helps in the understanding, we're age 20)
The last couple years I find myself just hating some of them most of the time...the little things they do; any sort of rudeness or inconsiderate behaviour I just can't seem to let go and instead fume over it for days. The weird thing is, I do love them sometimes, we have lots in common and can talk about anything, and I like going out with them and we have lots of laughs and good times. But then it makes me sad when some of them may do selfish or hurtful things, because I think "these mean people are who I call my best friends??" (some examples of what I mean are like just plain rudeness to things I say, or a couple of them secretly doing things without the rest of us, or people sh*t talking each other.......pretty typical stuff, but I wonder is it stuff you should expect from your friends?)

Is it normal to sometimes just be sick of your best friends and find yourself hating them at times? I look at other groups of girlfriends and get sad when i think how much they all must truly care for each othr, but then realise they too could have problems with each other I just dont see on the surface. Are lots of groups of friends like this? (inconsiderate to each other at times and sometimes hating each other)or am I really just trying to preserve friendships with people I should be moving on from?