I could spend a long time answering this question.
Doms, can get a lot from their sub depending on the terms, and parameters, and kind of dom-sub relationship there is.
The obvious is gratification of services rendered from the sub, but there is a lot more. If attitude and compliance play is employed, the dom can get an ego boost. Dom barks a command. . the sub does the command. the sub responds yes sir no sir. . So the Dom gets (respect) as well. Since the Dom sets the tone for the kind of play. . the Dom will get his needs met. Of course the dom. will also be meeting the needs of the sub, but since the dom is leading a play session, one can say the Dom's needs get Met.
I could talk at length about this subject, but I will wait to read some of the later responses in this thread and get back to it.
Misterslave.