It isn't a matter of simple preferences, and you know it isn't. Girls have a right to tell guys no.

Nonsense. Being told 'no' can hurt a guy's feelings. It can be emotionally traumatic, especially when he hears it day after day from girl after girl, often before even making a proposition. This naysaying should be prosecuted as disorderly conduct, First Amendment be damned.

Users that logged on months ago are no longer tying up resources. Maybe they don't need it but forgot to logout. Or their client died so there's a zombie on the server.