I haven't played as much as you have, I'm at level 17 or 18. It gets frustrating when you're a crap player like me, never had good hand eye coordination since childhood.
Trust me, I know what you are talking about. I have people asking me why I bother playing going 0-20.
However, I mostly end up on the top 10 due to me playing objective based gaming since I suck at getting kills, which helps a lot.
It's not that I have sucky hand eye coordination, it's because I'm getting older