With your family members, you may be more inclined to share, simply because you're related, Dr. Verdolin says. "Although, if you notice, many offspring do not like it when their parents take their food," she says. Parents stealing bites of their kid's food may be their way of showing dominance, and on the other hand, you rarely see adults sharing food with each other. Sometimes if it's a family member (like a sibling or older relative), you may decide that it's not worth it to get into a fight about it, she says.