> I declined because I don't negotiate like that. If you mismanage a negotiation, there is no do-overs just because you overplayed your hand. The trust is broken.

Not that it would be likely to happen, but you could also have doubled down. Now you'll need a 3 day work week and an additional 10% pay bump. There is some potential value in keeping emotion and irrelevant sentiment (like "trust") out of the equation.