Yes, I, too, remember when Mom would rinse and hang bread bags to dry because baggies were not yet invented. Not only wax paper, but what we then called tin foil. Brown paper grocery bags were always recycled, as was the tin foil (which was comparatively expensive), which we wiped down and let dry, folded and re-used. I lived my pre-teen years overseas, and some of what was available here in the states we didn't have.
I, too, grate, julienne, etc, on to a bit of wax paper. And there are times when you want to cover or wrap something loosely and wax does better than plastic if you want some air circulation. Nowadays you always hear about people using oiled parchment paper for baking, but mom always lined cake pans with wax paper.
Yes, I could live without a microwave, but having a kitchen that is not air conditioned, it sure is handy. One of my favorite uses is to heat or partially precook items so I don't have to have the stove on as long, or for items like potatoes that take longer on the grill than whatever else I'm cooking. It allows me to finish all of the meal at the same time. Baked potatoes in the microwave so not taste "baked", but in a pinch, in a hot kitchen or on the grill, you can microwave them until almost done, then toss in a very hot oven for a short period of time (or toss on a grill) to get the skin crisp and flavor really baked rather than steamed.
I don't have now, but I know many of my friends couldn't live without ice cube makers, dishwashers, and garbage disposals. People take them so for granted that they might not mention them. There are only two of us, so I don't miss them, myself, but my sisters (all with kids) think I'm insane to even try to live without those appliances, or without air conditioning in my kitchen.
To me, though, the thing I most appreciate is the relatively ready availability of foods and ingredients that I couldn't get some places I've lived in my younger days. Ethnic ingredients, bagged, pre-washed salad greens, many different kinds of pasta and rice. Even when I first moved to small-town Midwest USA only 8 years ago I couldn't get many ingredients that are now at my small-town grocery store.