OK, now that I've hiked half-dome, I don't have to do it again. It was crowded. The hike was long and towards the end more than a little painful. I'm still sore 24 hours later (though I'll admit I'm not in great hiking shape). It might be more fun when it's less crowded, but this hike reminded me why I always do my trips from Tuoloumne Meadows and almost never visit Yosemite Valley any more.