I had a whole list of things typed in an effort to try to explain why cyclists do many of the things that drivers find annoying, but I know it's not going to make any difference to most of you. Unless you have ever been a lycra wearing century riding fart smelling bikefag, the explanations are never going to resonate.
Think of something that you do regularly that isn't just an occasional hobby, but is at the core of your social interaction and a main component of who you are...something that would throw you into the depths of depression if you could no longer do it. That is what cycling is for many of us, and as someone who can no longer ride due to injury, the depression is real. You see a group of cyclists and have feelings of disdain and possibly even rage. I see them and feel sad because I can't join them.
It's easy to judge people for doing things that you have never done. Sign up for a charity ride and experience cycling from the other side. See what it is that we love for yourself. If you need a bike, I'll happily give you a surly discount on one of mine.
If you won't try it for yourself, then at least trust that your longhorn loving surly brethren must have valid reasons for doing something as idiotic as sharing the roads with the likes of you.