How does cooking take less time? I'm new to cooking so maybe that's why I'm slow but I feel like it takes much longer than going out.. You have to buy the groc

How does cooking take less time? I'm new to cooking so maybe that's why I'm slow but I feel like it takes much longer than going out.. You have to buy the groceries, prep them, cook, and wash your pans/dishes afterwards too. I can't imagine I'd be able to do all of that faster than going to a restaurant and eating, not to mention that while they are making your food you can be doing something else. I love cooking but I still find it to be tiring as opposed to going out where I'm just resting waiting for someone else to prepare my food.