Mrs BamaVol has always said that without me, she'd survive off grocery store salad bars.
I enjoy cooking enough to do it even if I'm the only one I'm feeding.
When I was really broke, I'd dress up a can of black beans with additives like Rotel, a sauteed onion, a can of corn or whatever I had on hand and serve over rice.
Today if short on time, I can still throw a salad together in 5 minutes and always have the basic ingredients on hand.