My English husband eats whatever I feed him - meat and potatoes, omelet, salad (with meat or fish), soup and sandwich. He'd love nachos for dinner. Most of the American men I know, on the other hand, need "real meals"! Although, the younger ones would probably settle for nachos instead of dinner, if you made enough.
I've never thought of nachos as a meal, but I see that they definitely could be. May have to put them on next week's menu...