But supermarkets are generally fairly filthy anyway? Especially the trolleys getting parked in the carpark. I just assume it's all bit grimey... (Can't remember the last time I used a trolley though - I can't carry more than a basketfull)
true... but food doesn't generally get a coating of snot and labrador poo, plus some remnants of whatever communicable germs some spitting oiks left on the pavement.
You don't know where their shoes have been so they could be spreading shit all over where you want to place your bread. It's unfuckinghygienic.