I was going to say never but I do have two pairs of shoes that have a small 2 inch kitten heel on them. But I think it's been about 3 years since I've worn them. I've also got two pairs of boots with similar sized heels and I haven't worn those for about 2-years either.
But hopefully, who knows, if I was invited somewhere nice I might... just... wear them again
It annoys me to think about when I was younger, working at a bank, I wore at least 3" heels all day, every day, sometimes 4". Eventually, I would quit work and be a full-time mom and homemaker, and be unemployed for several years. Once I started working again, I had pretty much forgotten how to wear heels. With practice, I'm wearing them again, mostly on special occasions (church, going out with the girls, etc.). I'll sometimes slip into a pair of peep-toe pumps at work, just for fun, even though it's a jeans-and-flats kind of job.