Should past presidents attend the inauguration?

Yes and I see that Al Gore feels a bit left out!!

Oh yes ! All should be there including Al Gore. Come on in Al.

As a courtesy, they normally do, don't they?

Think it's more, a gesture of support for party & individual. Certainly no requirement to attend if they have neither.

they can if they Like ... but they don't have to ... it's not a requirement... and they way The trumpster is trying to Un do what many of them Did ... they can show their distain by not attending...
Love shot with Al Gore looking in from the outside...

Of course they should, but it seems there are a lot of sore losers this time :-(

The question should be "Will Obama ever go away!"

Wow a totally photoshopped pic with them as they pretty much appeared in office. That aside, I'd hope the formers are Presidential enough to do their best to attend. I'd understand if HWB can't make the journey due to his deteriorating health. I'd love to see him skydive in like he did tandem style for his birthdays.

As respect to the Office of the President and Commander in Chief I think they should, with exception to health restrictions like H.W. Bush has or similar circumstances.

Sp4 Byron Skinner Yes it demonstrates a unified government to the rest of the world and a peaceful transition of power.