Because a 5 year old was present?
Obviously I couldn’t say my reason for resigning out loud in polite company. Children are a joy and a treasure.
But I’m not the only one of your colleagues who secretly doesn’t want to hear anything about your children and resents you (the hypothetical “you”) for bringing them to work.
I’m just not allowed to admit it, even during an exit interview.
Although perhaps in America colleagues and bosses are more vocal about it, as jemmyw implied.