If you use a soldering iron with replaceable tips, how often do you replace your soldering iron tip?

Arlette says:

Clean the tip when it’s cool. Examine it. If it’s pitted, chipped, or not the proper point anymore, replace it. Heat it up. If it doesn’t tin well, replace it. I go thru about 2 or 3 fine tips a year, only because of I’m doing a lot of surface mount soldering, I like having a fresh clean tip. Kinda like sharpening a pencil before starting a new big project. The bigger chisel tips for larger wire hook ups like power connections, I’ve gone thru maybe 3 of those over the last 20 years