You just use toilet paper to dry

I was reluctant to get a bidet because I couldn't hook it up to a warm water line, and was pleasantly surprised when I realized buttholes really aren't that temperature sensitive. Even in the dead of winter, cold well water shot straight up the butthole doesn't feel cold or shocking at all. Probably impossible to believe unless you try it yourself.

Also, don't be a monster and dry your butthole with a towel. Just use a little bit of toilet paper so if you're still dirty, it's okay. It's not like your whole rear-end gets soaked, it's a very thin steam of water that targets just your butthole, with maybe a tiny bit of spray on the surrounding area

It's only surprising or strange the first time. If you aren't acutely aware of how the water of a shower hits your skin every time you shower, then you won't notice the bidet more than the first or second time.

You can get ones with heated water and warm air drying capability (they are more than $30 though)