Plastic has a many uses, but surely we should focus on trying to minimise single use disposable plastic.
Last weekend at the supermarket, I was behind a young guy in the queue: two lemons, in a plastic bag. Two carrots, in a plastic bag. Two capsicum - each one in a separate bag! A bunch of bananas, in a bag. Bananas, of all things, come individually packaged by nature, and are even then joined together for ease of carry - why would you need to place them in plastic as well?!
Err, just to keep this on topic, I'm sure he had some plastic straws as well.
I do this, because I wont put my fruit and veg in the basket as they dont seem clean especially with fruits where the skin will be consumed. That this is single use plastics is correct though opposed to the carry bags which is the only plastic that is not single use.
Surely you would wash any fruit before consuming so putting them in bags makes no sense.