I've had two periods in my life when I commuted significant distances.
In my 20s, I worked in London and commuted about 40 mins each way by mainline train, then same time again on the underground. I actually got used to that, it was an opportunity to read the newspaper. Remember, passengers could sit down on trains in these days. It was also nice (at that age!) to enjoy the hustle and bustle of London by day, then return to relative peace and quiet at night.
Towards the end of my career, I found myself commuting 90 minutes each way by car (not to London). I had my secret cross country route of minor roads that were largely traffic-free, mostly national speed limit, and rather pleasant scenery. I sometimes enjoyed the drive but even so, it never became 'fun'. I'd agree, that was about the upper limit of my tolerance.