I don't know that it will kill you, but I just realized I basically stopped eating bread as well. Back when I started to lose weight, I did the math, and skipped bread. Bread itself has lots of calories, is not very filling, and the types of things I put on it are even worse. It just wasn't a good use of my limited calorie budget. Living by myself, I always froze bread, because by the time I got 1/4 of the way through it would go bad, and I still have a left over pack of bread in the freezer that's been sitting there untouched almost a year. I'm not militant about it or anything, and I'll eat some bread when I know it's very fresh and tasty, by way of an appetizer for example, but I've basically removed it from my diet now and don't miss it the slightest. There are so many other things I would rather eat instead, that taste great, have lots of nutrients, aren't calorific, don't blow up my macros, and are more filling. As far as "sandwich" type foods go, I prefer wraps instead (and crepes for sweet things), because you can stuff a much greater variety and amount of stuff into them vs piling it on a slice of bread.