I live in Southern California, and there are tons of bike lanes here. It's not a cyclist's haven necessarily, but we did recently pass a law that makes drivers give cyclists three feet of leeway minimum from the bike lane as they pass or they can face a ticket. I don't know how much that's being enforced, though. Anyways, I prefer using the bike lane when it's available, and I see dozens of cyclists using these lanes whenever I'm out and about.