I don't think I'm toooo fussy, I eat the odd bit of fruit when I'm in my garden.
BUT - putting aside concerns about pesticides, fungicides etc - next time you come back from a session at the supermarket, go to the bathroom at home, put the plug in the sink, wash your hands and look at the water. My hands get really filthy just picking up things at the supermarket, and I wouldn't want to drink that water, so neither would I want to eat food with that level of dirt on it.