It's not a matter of being lazy. Cooking and eating consumes hours in my day. At least four hours a day, and typically six hrs a day if I get fancy with cooking.
Wow, you need to optimise! I spent less than an hour today cooking and eating a healthy breakfast in the morning, and a healthy dinner (with leftovers) this evening. I bought prepared food for lunch, but it wouldn't have taken me three hours to cook and eat something else...