Eden nicely stated many of my own feelings on bike lanes....

I'm a bit cautious about them for a variety of reasons...the inevitable junk/crap/rubbish that is all over them ranging from glass, girt, to parked cars....the fact that cars will rarely if ever bother to look if anyone is in the bike lane before turning, which is how one hit me.....and of course, intersections and disappearing bike lanes are a problem.

I prefer to be on a bike trail far from traffic OR riding with and in traffic, not in between ala a bike lane.