Is it normal to be upset by food waste?

Normal. I try not to waste food. If I know I won't eat it yet, I'll just put in the freezer for a much later time. Food tends to have a longer shelf life when frozen, so there's no waste.

Perfectly normal, especially if there was a time in your past when food was hard to come by.

Yeah, that disgusts me too.. -_-

Me too, anything I don't eat which can't be stored is either composted or the dog eats it.

Where I live there are a number of community groups who give away or sell at low cost food which supermarkets would otherwise throw out - eg fruit & vegies with tiny blemishes. Second Bite is one, can't remember the names of the others right now.

If you're passionate about this, why not get involved where you live or start a group yourself?