I see the same thing on various firearms boards, too. Vicious hate towards cyclists. I don't get it.
In 30 years of driving, I've been inconvenienced to the tune of maybe 30 total minutes by cyclists and have never been endangered by one. I can't count the number of hours I've been stuck in traffic caused solely by rubbernecking and other stupidity, not to mention the close calls over the years from boneheaded, dangerous stunts and reckless driving by other motorists.
I dunno. Maybe some conservatives assume all cyclists are tree-hugging libtards. Not that that would be a reason to hate someone on the road, but it might explain some of it.
I will say that in general, a lot of people are aholes. Some of them are cyclists, some of them are drivers and some of them post on FR.
Thanks for your observations. I used to do a lot of hang gliding. The out of work loggers near the best launch area in our state used to direct a lot of anger towards us. They seemed to think that all hang glider pilots loved spotted owls. In reality my mentor was a former Green Beret who did tours in Vietnam and was considered the father of hang gliding in South Korea where he helped the locals construct hang gliders out of bamboo. We were both conservative gun nuts and I spent ten years working at a lumber mill before I became a firefighter. I think it was the same mentality as some of those who spout their hatred of cyclists here.