I once met a cute girl with glasses and multicolored hair. Finding out she had armpit hair gave me a rush, and when I hung out with her again, this time in daylight, I noticed she had armpits as hairy as a typical male's, which did nothing but impress me.
I figured she deliberately left her pits unshaved, but I didn't want to bring up the subject.
To this date I've yet to find pits as natural as hers. *sigh* Ironic, since I'm the kind of guy who would totally shave his legs and forbidden regions if not for the hazards and hassle that come with doing so.
Oh well, pits can be hot, hair or no hair.
Even barring this whole fetish of mine, I'm of the firm belief that it's a woman's choice--and hers alone--what she wants to do with the hair on her body. If some woman wants to go au natural, it's their business, not mine--she shouldn't be forced to laser/wax/shave just to avoid being an eyesore to the majority of straight men.