You think cotton is expensive? And you think electricity and water were cheaper? None of that is true. I actually looked up what a load of laundry costs in terms of energy and water. It’s about a kWh to wash and another to dry. Water is maybe a dollar per wash.
So $1.50 per wash and dry at most for a couple dozen new diapers. And you forget the best part: you never run out! So you save time by not needing to go to the store.
If you think doing your own repairs is impossible to “comprehend”, I don’t know what to tell you. You may currently live in a house built by illiterate people. And I mean that, literally. Most repairs are very approachable with just a screwdriver and a wrench. You probably have the tools already (or $10 to buy them).