I think speed can be an asset in certain situations, but it can also be a hinderence because most very fast bows are more difficult to shoot well. Speed lures in many new archers into buying bows their neophyte hands are not ready for yet....so it that case I'd say that speed kills a new bow hunters opportunities rather frequently.

I don't think having more speed hurts, but its really about balance. You have to shoot a bow at a poundage that you can shoot well, with an arrow heavy enough to get the job done. Personally I like my hunting bow to be under the 280fps mark, even though I shoot a bow that is capable of speeds in excess of 320 fps. I shoot a very heavy arrow.... the trade is that the bow is very quiet and I can see my arrow in flight and know exactly where it strikes the animal, which is very important information to have before you take up a blood trail.