... is that some riders think I'm riding in the back because I can't do any better.
Another thing is that most of the folks I sweep aren't exactly thrilled to see me, probably because my presence is a reminder that they're at the back of the group.
So it goes. I don't sweep rides for the sake of the other riders, anyway; I do it for myself - to quiet my own demons. But hearing the folks who were riding off the front apologizing for pushing the pace on me, when I could easily have kept up with 'em, does rankle. Some.