12 is a great number. I have 21 with a couple on the way out and one on the way in, but in my case I walk a ton and switch up pairs during the course of my day so I inevitably go through everything at least once every 10 days or so. If I knew my preferences when I started I would have been more considered and would have preferred to stop at around 10 - 12. At some point down the road a cull is coming. ;-) Or at least a 2 out 1 in system.I get that, but there is a middle ground between having 3 pairs and so many that you wear some once every 6 months. To quote your good self, 'I've got way too many pairs'. I'm sure you're not missing out on anything as a result, just my opinion is all, hence why I stopped at around 12 pairs.