I've had them and I've had guys fuck me and miss stimulating my prostate; I have a prostate stimulator that, well, it vibrates with differing speeds...
I don't think it's unusual and I believe that it's because once you get to sucking, your focus is on what you're doing to him, which is arousing you...
First, I wouldn't say that being a bottom is a big disadvantage because tops are always looking for bottoms - but - they want the "right" bottom for...