"Sexist" and "true" aren't mutually exclusive.
And "sex" and "relationship" aren't mutually
inclusive. There's not some inherent magical quality to sexual stimulation with another person involved that automatically brings companionship and fulfillment and relief from crushing loneliness. Don't envy the wrong people, the wrong things, the wrong solutions. If you have at least one real friend and you jerk off when you feel like it, then you're getting at least as much out of life as your mythical broad-stroked stereotypes are.
And by the way, stereotyping a large group and writing them off as all the same is always, always stupid. Nobody knows anybody well enough to know everything about them -- claiming to know everything you need to know about 3,430,068,894 and a half people (as of 04:47 UTC) (also I'm leaving out the ~50,000,000,000 dead ones) is astronomically ridiculous. Everyone is different. There
are women who want sex, there
are men who don't. And more importantly, there
are people who are actually interested in understanding and connecting with other people. If you look hard enough and you're lucky -- and if you're one of them -- you might find some of them.
(If someone figures out what to do once you've find one, let me know. I never really got that part down.)