He had cancer decades ago and it came back a few times, didn't he? He probably convinced himself into thinking he wasn't going to die until it was too late, an

He had cancer decades ago and it came back a few times, didn't he? He probably convinced himself into thinking he wasn't going to die until it was too late, and things like this probably drop down to fairly low priority at that point. Not trying to excuse him though; if he actually cared he should've been thinking about it when he was opening the museum.