If you're female, having a caving significant other solves a lot of problems.
No one thinks it strange when you go on a trip and 80% of the participants are men (They're other cavers. Do they count?) or you go out for beer with the boys.
The kids don't think it's an insult when someone says, "Yer mama wears combat boots." (Yeah. So?)
You both do laundry. The groady kind.
You don't have to explain that yes, you DO have to strip to the skin in mixed company after a trip, or risk freezing to death. (they've been there, too.) (clothes can be quite muddy after certian cave trips...)
There is nothing unusual, at the end of the day, to find stray bits of unrecognized clothing in the car.
No explanation is needed when one says, "I'll go to bed after I (finish the grotto newsletter, print the membership cards, get done packing, clean my lights,
find my (insert lost caving article here), pack my pig (an improvised caving pack made from two gallon bleach jugs) , answer this email from some stranger looking to take 50 scouts to a cave tomorrow.)
They understand when you want to wear your helmet and light to the theater-- they'll find theirs and come along, too.
They know why you prefer to clean someone else's cave than your own house, and you think camel crickets in the basement are way cool.
Wouldn't trade them for a million dollars and a mansion in the 'right' part of town.