I commuted for 12 years from SF to HP in Cupertino. 1 hour each way. Finally I realized that was about one extra work week / month, just in the car. That put me off car commutes forever. I have mostly worked in SF since I left that job, I was even able to walk to work at 2 jobs. That is the best. Now I commute to the East Bay, but I'm able to do that on Bart. That is manageable. I mostly meditate which is good for me but otherwise would be hard to find time for.
If your home and work are right near BART stations, then that's really not bad. The killer is when you have to do "last mile" commuting, and the commute becomes multimodal. I'm doing that now and I absolutely hate it.
Try the ferry. Once you get a whiff of sitting outside on the bay during a beautiful sunset commute, breathing in the urine odors of your typical BART car will never seem a viable alternative.
