I feel like I am lame that I haven't even experienced a girl yet. . .
I used to feel like that a little. I'm strongly hetero, there's nothing wrong with that. It is what works for me. GLBT people shouldn't force themselves to be something they are not, and neither should hets.
I prefer to be with an individual with a penis, but there are days I would rather have someone with a vagina. I'm not specifying "man" or "woman" because there are those that have penises that identify as female and those with vaginas that identify as male. And there are those that don't identify as a set gender or any kind of gender, for that matter.