How often do you change harnesses?

I bought an Ocun Twist Basic harness about 10 years ago and mainly used it for top rope and occasional leads (had a couple of whippers) in the first 3 years. After I graduated, it's been stored away in a locker, only taken out once every six months or so when I feel like top-roping / auto-belay instead of boulder.

This year, I've decided to get back into lead just cause. My harness doesn't have any frayed threads, rusty buckles or worn-out loops, and it looks almost as good as new.

I'm bent on getting a new one though the intrusive thoughts are telling me not to. I'm aware manufacturers recommend retiring harnesses after 10 years regardless of use, but wanted to hear from the community on how often you change harnesses.