There's no excuse for not cooking for one unless you are physically disabled. NONE. I work 60-70 hours a week and come home and cook for three. It's not easier cooking for three, it's harder because I have to deal with picky eaters. Some days I say "This is what's for dinner. Deal with it or make a sandwich." One day I crock-pot. A couple days I saute meat and vegetables and put it on pasta or rice. Takes 25 min tops. Sometimes I can convince my S.O. to do the prep work so then it's more of a 15-20 min deal. Less than half the time it takes to drive somewhere and get take-out. If you are lazy you will never reach FIRE. Never.