When it was South Bay to SF I commuted by driving to Caltrain, taking the train up, and then walking across half of SF.
Now I bike most days, unless the weather is crummy or the state is on fire again.
The work life balance issue was definitely partially the fault of the culture of the company I was at at the time, but living so close made it much more difficult to avoid.
And yeah, that’s an issue of willpower in part, and is the same reason I am not able to work remote or from home. But I don’t think that’s an issue unique to me.