One of the reasons I decided to eschew socks for ever was the dreaded phenomenon of sock-slip. I always hated those grooves that normal socks left around the bottom on my calves, so used to wear those loose-top ones. After a short while they generally ended up scrunched under my foot inside my shoe with an unbesocked bare heel to show for it. I found this to be an intensely crippling experience. I regard socks, along with the boob apron, to be among the worst sartorial inventions ever.