I do not share my food with any. And no one really shared any food with me. There were times where we halted to eat at a food joint but, never shared the food that's with us.
Maybe, it's programmed in all of us about the way people can mistrust if you share the food. Maybe one gotta develop the trust to share the food. It's okay. Not easy to deprogram a few beliefs.
I'm okay with it. And if I keep sharing my food with others, I'd end up carrying the heavy baggage of food since I get into too many vehicles to share with.