We take things we have like food and water for granted. It used to be that we throw food only when it has gone bad. I remember my grandma removing a moldy part from a piece of bread before she ate it. So, I am comfortable doing the same.
You do not have throw away your loaf of bread on its expiry date if you keep them in the fridge before that date. You can fry french toast with them or put them in the toaster to heat up before eating.
Keep this prayer by Avalok that I discovered on Slideshare to remind you why you should not take good things we have for granted.