Maybe that's the underlying fact that's too hard for many people to face. That it's not just the shock of this person we liked being "gone" but also that we were told it wasn't true, we all staked our reputations on that assumption.
How dare you try to retcon our own lived experiences? I didn't stake my reputation on "It's fine if he's impaired as long as he's good." I am a national security Democrat and would never have been okay with any lapses in our nuclear deterrence capability.
I believed the claim that he generally has a good memory and is fit, he just couldn't remember the details on the storage of some paperwork from years and years before. A lapse anyone might have. I thought the GOP was playing it up to smear him because they couldn't find any crimes.