Ours went into our savings account, too. We dont have credit cards. I did years ago, one. And saw the total amount due going up each time I made the minimum payment, and I got it paid and closed. That was my only and last one. It wasn't that I was smart or anything, I really wasn't back then. It was the overwhelming feeling of the card company .. how to put this delicately.. well, I can't say what I started to LOL .. um.. "doing me over". Ya, that's delicate LOL! Or putting the thumbscrews to me :-) That made me angry enough to stand up for myself and close the thing.
Anyway, as usual I rambled to get to my point, and the point is that we are our own credit card, so that's why it went into savings. For car repairs, home repairs, etc, that are an ongoing part of life!