

It feels like they are flogging themselves and want you to take pity on them. It feels either a little manipulative and/or tiresome. Say it once and let’s move on. The other person is very unlikely to be holding you as culpable as you making yourself out to be.
Similar to the argument Intelligent Design (anti evolutionists) use. They always point to fossil gaps and say “Well, what happened there?” You have no control over what gets fossilized and where you can find them and there will always be a gap somewhere. “Well there is a gap on Tuesday, 67,000,000 BC!” There is no possible way to fill in every imaginable gap with physical evidence vs seeing patterns and development across those gaps.