OP's probably never been to a region so dry that people actually appreciate a bit of humidity. Living in a relatively humid region, it's easy to see humidity as a nuisance that no-one would actually desire.
I didn't get it until I first visited Las Vegas. Nosebleeds, and static electric shocks every time I touched a door handle.
Yes, my SF apartment gets moldy and musty smelling if I don't run my dehumidifier all the time. I think I have some kind of allergy. Does wonders for my PG&E bill.
Yeah, as others said, I just can't imagine it - totally foreign concept. I didn't mean to be insensitive.
That said, I have friends from Europe who struggle in Summer because although they're used to much higher temperatures, they say it feels hotter because it's so humid. (To which I think "is it?!")