Maybe. Maybe not. Sure, Kirk may have had a lot of affairs (and by that I mean MAY have - the joke that Kirk sleeps with every woman he meets is just that, a joke. How many actual encounters has he actually HAD? Probably not as many as people think), but that doesn't mean he likes "everything". Maybe he just likes a lot of different types of women. People are always going to have preferences. Not everyone will like everyone, not even in the future.