I watched every second of the game on TV and like everyone else it was cringeworthy, however as Geddy Lee said there were a number of factors that contributed. I have added some more.
They are the best side in the AFL.
They are physically far stronger than us.
They are far more experienced than us.
They have enormous self belief in each other.
They are more talented than us.
Their team was close to full strength, we were missing many of our best players.
We played a number of youngsters.
It was wet and that helps the stronger and more skilful sides.
They are four weeks away from the finals and we are playing out the year.
They backed themselves, with a player always running to space in the forward line for the turnover, which came often.
Their team has been settled for the year and ours has been disjointed through injury.
Our younger players are tiring after a long and disappointing year.
Our ball skill fell away under relentless pressure.
They beat the second best side the Bulldogs by 10 goals this year.
They beat the second best side in the Grand Final by 20 goals last year.
Etc, etc,etc.
Losing like that doesn't we mean we didn't try, it just means they were a hell of a lot better.
If I played Federer I wouldn't win a point but it wouldn't mean I wasn't trying. Same thing last night.