Slaanesh isn't about gender.Help me spin Slaanesh? Thanks.
Slaanesh is about DESIRE, and not necessarily sexual desire. The desire to excel, to be the best, to triumph. That's a powerful force, and that's why the other Chaos gods are all so afraid of Slaanesh. They all know deep down that without desire, they'd be nothing. Tzeentch wouldn't even bother try to change anything, Khorne wouldn't keep hitting the gym and working out to bet stronger, and Nurgle would just sit on the couch all day instead of cooking up new diseases.
Ever watch Mad Men? That show had a perfect example of a Slaaneshi champion - Don Draper. He built his entire career on creating desire in others - the desire to buy, influenced by his ads. Don's personal life was ruled by desire - the desire to be the best ad man, to land the big contract and, yes, to sleep with anyone he thought was pretty. Don embodies desire - he'd be perfect for Slaanesh.
That's what we love about Slaanesh. Want to win that game of 40K? That's Slaanesh whispering in your ear. Want a beautifully painted model? Guess who wants you to want it. Slaanesh is what moves you to act.
And besides, Slaanesh has the best parties.