Only when I have to. My grandpa helped hook me up with my mortgage (he does this as a side business and I get NO special treatment just for the record) so I have to mail that by check. I am sure I probably could set up an online payment thing, but it's far more simple to just throw a check out every month.

I also have to mail a check for my condo association. There is an online payment option, but the website is trash and you have to jump through way too many hoops to even set that up. It's easier for me to pull money from my 401K than to set up an online payment for my association. Stupid. Anyway, I mail it by check and they do provide everything but a stamp, so again, far easier by check to do that!