Andy Eagle ( Guitar repair tech for 30 years )

[bucephalus]

Wear is mostly the picking hand . A sledgehammer fretting hand just makes you go out of tune or destroy your strings. Bending wears strings quicker too and old tarnished strings wear you frets out the quickest if combined.

Ah ok, see I don't even know which bit it is I'm doing wrong! Electrics should be ok then as I play with fingers, no pick.