If all you are making is a sandwich then spend that hour once a week going to a grocery store to buy bread, mayo/mustard, lettuce, meat or meat substitute, etc. Then spend 3 minutes making a sandwich a day and 5 minutes eating it.

I don't understand how anyone can see a horribly tasteless, gastrointestinal disturbing, chalky goop could be an improvement on literally any other option.

But, I am excited to prepare and eat my meals every day. The taste of the food and the experience of eating is important to me (as is the forced time away from keyboard). Not everyone feels the same way, obviously (though they are wrong! ;) ).