I decided a long time ago that I look better in slimmer cut jeans/pants. I can pull off skinny jeans, and I like them, but they sure can be a pain in the neck to get on and off. I used to wear boot cut pants all the time for the reason that @Puffer mentioned, as an attempt to minimize attention to my heels, but I guess I got over that some time ago. Because I like to wear mules, I was glad to get rid of boot cut jeans, as the two don't live together in perfect harmony.
Perhaps I am mistaken in my self-assessment, because my 40-something woman friend, mentioned several times elsewhere, wears boot cut jeans all the time with 3 inch heels, and she looks awesome. She's a very tiny woman, as well. The downside is, you can't really see the shoes. That was definitely the style in the early 2000s, when she would have come of age. I can remember working at the Iowa State Capitol building in 2004 and watching for heels, which were very common at the time. It was sometimes frustrating, because all you could see was just a sliver of a stiletto sticking out the bottom of a pair of pants that were very nearly dragging the floor. It was against this backdrop that I started my high heel journey, thinking I could do the same.