Manhattan is sort of a special case and I can tell you from personal experience that 90 minutes is pretty bad even if a lot of it is spent on a train. I commuted into Boston a few days a week when it was about 90 minutes door to door and IMO it was not sustainable. If I go into my downtown office now which I do rarely it’s 2 hours.

That some people are forced into super-commutes now and then doesn’t make it a really sustainable most days situation. So you’re up by 6am or earlier and you’re not getting home until 8pm or later depending on your work hours.

And it is an awful existence. People do it for the chance to earn more money, but I would not wish that quality of life on my enemies.