I don't mind defrosting a small vintage fridge, the single door type with evaporator (so-called freezer) in one corner or the center, provided it's not my daily driver. I used to happily defrost my little '39 Westinghouse, which was a drinks fridge on the patio. If it was out of commission for a while, it made no difference.
On the other hand, a frosty type in the kitchen as my daily driver would be a bigger issue, and would have to be defrosted a lot more often. Very disruptive, even if it's like my '57 Combination where the fresh food section can remain undisturbed and the freezer has a drain in it.
I'm a big fan (no pun intended) of frost free, and have to disagree with the assertion that frost free freezers soften frozen items. That defrost cycle would have to be really long to thaw pretty much anything I've got in my freezer. I've also noticed that anything stored in the Combination's freezer that's packaged in a paper box (a frozen entree, for example) becomes damp and flimsy. I no longer store any items packaged that way in the combo's freezer. This doesn't happen in the big frosty Tru-Cold freezer in the basement, so it appears to be an issue with the Combination's system -- and I've checked the temperature in there. It's below zero.
Frost free means there's one less thing around the house that I have to do, and I like that.