Your ignorance once again dominates this post. Assuming one lives or works a highway drive to SFO, during the commute it might take more than an hour; the flight to LAX is around 90 minutes, and getting to a rental car there can take 30-45 minutes, and then the drive in the LA Basin is at best tedious.
Anyone who has traveled in Europe understands the trains are comfortable, not crowed, have seats and tables, large restrooms and the ability to move around, stretch and debark in am area (usually) with immediate transportation by bus, light rail or cab.