I feel guilty when I'm pulling a hard climb and need the lane, but sometimes its the safest thing.
In our "gimme, gimme NOW!" society, most people think that they are being delayed behind a cyclist and get all in a tizzy over it. In my experience, which includes 7 years of road cycling and thousands of miles, people are rarely delayed behind cyclists by more than 30 seconds. If you're that late, that 30 seconds matters, you're fooked already.
Instead, when you pull in behind a cyclist grinding up a hill, take three deep breaths. Relax. Check ahead to see if you have room to pass. Unless the road is heavily congested, you're going to be past the cyclist before you can even figure out what color his/her bicycle is.
<insert chosen roadway here> is not an Indy 500 track. Freeways are off limits to cyclists. You're going to get where you're going, probably faster than you think.
If a cyclist is going slow, you'll be able to pass faster, as he's not covering as much ground as you in that short of a time period.
Sidewalks are dangerous. Blind driveways, pedestrians, debris, damage all pose dangers even to the most casual of cyclists.
Bicycle paths aren't much better. I've had more honest close calls on bike paths than on roadways.
Bicycle lanes and wide shoulders that are adjacent the lane of travel are the best.
I've only been hit by a car once. I was riding on the edge of the lane, and a large pickup with an extended side mirror clipped me in the shoulder. It didn't really hit me hard, but it scared the bejeezus outta me. I freaked out so much that I rode into the ditch.
Sounds to be exactly like my experience! I was clipped by a mirror in '93 in Yuma, AZ. Home of the snowbird, the old bastard kept driving. I went down pretty hard, broke my helmet and blacked out for a few seconds. Bike was a cheap mid-eighties Diamond Back road bike, it was built like a tank and suffered no damage.
In '90 I was riding through base housing on Cherry Point. Car decided to make a U-turn from a parallel parked position. I was a tri-geek back then, all tucked over on my aero bars....broadsided the car door....
Got back on the bike in '01.
Of course, with my back being trashed right now, it'll probably be a few weeks before I can ride.