It depends...some of these people are biking because they are drunks.Of course they deserve what they get. Of course, like they say, alcholism is a addiction where you have to hit rock-bottom before you can recover (or die). Its sad but unavoidable.
Now, the others that are biking are doing so because they are too poor to afford car/gas/insurance. I've come up from poverty myself, and the snobby attitude I see from roadies really ticks me off. When I first started cycling, I swore I'd never ride a road bike. Eventually I realized a greater justice....get as good a road bike as I can afford and do my best to make them and their 5000$ bikes eat my dust and choke on it.
And yeah, I do sympathize with my lower-class brethern whom I've left behind. I grew up in projects and trailer parks, I've seen the best and worst of it. I was fortunate enough to have family members who are middle-class, and everyone around me encouraged me to make something out of myself. So now, I go to college to eventually major in Computer Engineering. Thats coming a long way from life in a trailer park.
I know most people can't do what I've done; they just can't, their world just drags them down too much. Your friends get jealous..your co-workers sneer down at you..life gets in your way at every step...hormones are telling you to have a baby at 20...the drugs that ease the pain of life eat away at your brain...Yeah...I understand.
I've eschewed having friends, alcohol and drugs, having a girlfriend, and generally having a social life..so that I can become successfull. I guess, while I sympathize and feel pity, I know there is little that can be done. Few people want to make those kinds of sacrifices..I just bless and thank god and my family that I don't have to always be one of them(the poor) as I pass them on the road.