Some people collect stamps, some people collect train numbers...is collecting shoes any stranger than that? It's more expensive...but how many people here pay a lot for PC hardware that they don't really need? An extra £100 for 5% extra performance you won't notice outside of a benchmark, for example. Or who spend hours tuning their PC to maximise performance when the only effect of doing so is to knock a fifth of a second off the time it takes to calculate pi to a million decimal places?
Many people are weird in different ways.
There is a practical aspect to shoes, though - competition.
Woman A goes out wearing a practical pair of shoes that cost £25.
Woman B goes out wearing an impractical pair of shoes that cost £100, made by whatever name is fashionable this month.
Woman B wins. She has made a better success (= money) display than woman A by demonstrating that she has money to waste on over-priced and impractical shoes. It's more subtle than pulling out a bundle of notes and shouting "look at my wad!", but it works the same way. She gains status amongst competitors.
Humans are different to other animals, but we have a lot of similarities with them.
Many people are weird in different ways.
There is a practical aspect to shoes, though - competition.
Woman A goes out wearing a practical pair of shoes that cost £25.
Woman B goes out wearing an impractical pair of shoes that cost £100, made by whatever name is fashionable this month.
Woman B wins. She has made a better success (= money) display than woman A by demonstrating that she has money to waste on over-priced and impractical shoes. It's more subtle than pulling out a bundle of notes and shouting "look at my wad!", but it works the same way. She gains status amongst competitors.
Humans are different to other animals, but we have a lot of similarities with them.