As someone who works in a market, eating anything without cooking or washing it first is a bad idea. Most of it is fine, but people are disgusting and there's no way of knowing how many people have touched your apple, if someone's kid managed to lick it without you noticing, or someone managed to push everything off the shelf onto the nonslip mat before they got stopped. Bagged produce can be even worse, given the amount of condensation inside the bag after it warms up on the loading dock and then sits in the cooler. The mister above the fresh greens and such doesn't do much and they regularly get touched and knocked out. The potatoes are probably the best, as the dirt on them is obvious.

If you live in an area with entitled people and spineless corporate rules that don't allow stores to confront people over pets, that's instantly worse than everything else combined. Pets like to lie on the floor, someone's dog has peed on the floor, 5 different random people have petted hugged or picked up that dog and 3 others since they left the house. One of those people is probably a cashier who then handles every item you've bought. And then someone inhaled pet hair and sneezed.