I used to frequent a popular swing spot in the bay area(and elsewhere) and there were at times hundreds of people there and maybe 10 that were in any kind of shape. In my younger days I pretty much fucked anybody but it got boring fucking incredibly out of shape folks with dicks the size of a peanut. So I guess the question would be why would porn chicks swing? They pretty much can act out whatever fantasy they have with guys that pretty much put the hammer down.