With age comes freedom

Everyone is here for different reasons, some to find that someone (odd as that may seem for a site like this), some are here to find special others in Polyamory as you mention and some for NSA Fun and friendship :).
Each to their own and Viva La Difference :).
As long as everyone is clear and honest about what they want no harm done :)

.....and of course among the reasons for being here, simply perving and fantasizing would account for a large number of people :-) You just have to accept the fact that it's different strokes for different folks.