As soon as bicycles have to pay a vehicle registration fee/tax I will consider them another vehicle. Until then they are just another hazard. It's just like granddad driving in the left lane going 30 under in his Buick.
I dealt with bicyclists a lot in Austin, and they are the worst sort. Smug, passive aggressive, and generally dumb. In Lincoln they are much better and generally contained to the bike trails, but every once in awhile you get a free thinker that desides it's a good idea to weave in and out of stopped traffic at a light. I just want to smack them with a door, or if I'm on my motorcycle get off and punch them in their snooty enviro-hippy face.
For those of us who tend to follow the rules of the road, a hazard going 20 under the speed limit is a real problem. I can stop a heck of a lot faster on my motorcycle than the car tailgating me can, and if some tard on a bicycle pulls out in front of me (which has happened) I'm not all too keen on hearing squealing brakes behind me.
They are a real menace.