Mine is sadly very lousy. A side-effect of chemo. Plus I'm old. As you age you remember less and less and less. I believe folks when they say they can't remember. Sometimes they can and are lying of course but when I say it I MEAN IT. Maybe some of his bad memory excuses were lies but maybe some or more than some were simply being honest. I only know what is true about my memory. If it can happen to me why not him too?