If you feel you need to wash soft fruit, just wash it immediately before eating to avoid mould forming.
I don't bother washing vegetables that are going to be cooked, either, but I always fish them out of the water with a slotted spoon rather than tip them into a colander and then pour the water containing any dirt that came off "in the wash" over the top of the now clean veg.
Ditto washing salad - I fish it out of the water rather than tipping the lot out - again, any dirt that has come off will land back on top of the clean leaves.
There is a point to washing oranges if you have a juicer like ours. It's a rather primitive one from Turkey (a present from DS who spent a semester at Uni there), and the juice runs down the outside of the peel - quite a messy affair, but fun to do! As oranges come from quite a way away and are handled a lot en route, I prefer to think they're washed before going through that procedure.