well the main reason we got into this was due to me wanting her to experience a cock larger than mine after 6 failed attempts with white guys. She has now had 9 different BBC's and a few were equal to me
You are probably correct even though we are small we get turned on or have an erection most of us have fathered children, the thing is as with my first wife she discovered bigger cock and our marriage was never the same. Would guess if a white hubby had a huge cock most likely his wife would not be here.
I don't believe most people, here, really understand what a "small percentage" of the overall population that swinging really involves ... and even smaller percentage of interracial swinging.
This might add some perspective to the overall scheme of things ... http://inspiyr.com/can-swinging-improve-your-marriage/