I think many guys use them for slow, prolonged solo sex play to tease themselves, and to stimulate the prostate so that when they finally jerk to climax, they get a different kind of orgasm that is more like having been serviced by their favorite top. The orgasm derived from prolonged and intense prostate stimulation is felt deeper within the body and the sensations are as intense or possibly more intense or concentrated in the prostate as they are in the penis. Otherwise, all the sensations would predominantly be in the penis and secondarily in the prostate. It's not as deep a feeling or sensation. Part of this also may be about making the sensations last for a good while after climax. You may feel very different for a good while after that kind of climax.

