I don't understand the comparisons with other meals. Am probably doing it wrong.
Compare to a curry, chopping everything requires 2 chopping boards, couple of knives, one measuring spoon and cooking requires one pan plus rice in the rice cooker. It simmers slowly by itself until your ready, rice keeps warm until your ready in the rice cooker. Couple of serving dishes. Done. Similar for stir fry, pasta. Chop, cook, 2 pans, combine & eat.
A roast includes a roasting tray for meat, saucepan for parboiling potatoes, tray for potatoes, tray for other veg (we have a big family so fill a tray each with these), dish for stuffing, tray for yorkies, bowls for making batter & stuffing, pan for gravy....several serving dishes, gravy boat etc plus tongs, carving stuff. To have a proper good roast you need to make sure everything comes out when its cooked to perfection. Or at least rejigging of the oven.
After a curry feel like I can carry on with my day, after a roast I need a good lie down.