To the people who eat other people’s food from the fridge at work, why do you do it?

I once was so broke that i couldn't afford food for some days. I only had bread at home. And I was ashamed to bring blank bread to work ( i once got bullied because of that at school, so I got scared because I really needed that job).
So I ate some slices at home. During work I noticed how the last few days with just bread finally crashed on me.
I felt weak as hell, my circulation fell into hell. I coudln't properly walk, see or think. So I ate a sandwich of a coworker and an apple from another one. I was ashamed as hell and kept silent about it for some days.
When my finances got green again, I got both of them lunch as an apology and told them the truth. Both were angry because I could have simply asked them. But I was too ashamed. But everything is fine again between us. Sometimes the older lady asks me if my lunch was enough or if she can share with me - even if I say that it was enough and that I am full she still hands me some fruits.