I remember when I was about 15 I wanted a pair of school shoes that had a bit of a heel (like everyone else) but quickly regretted it. When I was next allowed to buy school shoes I got a small 2-3cm heel. As for special heels, I got my first low pair for my formal in year 12. I honestly wasn't a girly girl or anything (still not) so even for my formal I didn't really want them - Mum said I had to wear them cause I was wearing a formal dress lol (something else I wasn't keen on)