You need secure bike parking on the suburban side and bike share on the urban side. A typical commuter train car can take maybe 3 bikes per 100 passengers. Carrying your bike only works because so few people do it. Fortunately, the Bay Area already has this.

If you find the Spartan lifestyle compelling, sure, bike to the train station. From a planning perspective, it's a no-brainer to put the infrastructure there to facilitate it.

Just don't force it on the rest of us. (My mornings would go from pleasant and relaxing to miserable, getting in an overcrowded train car while sweaty fucking sucks, and I would have to stop running - if I'm capable of cycling the next morning, I didn't run hard enough the night before. If only my area were a little flatter).

Also, you often don't need a whole car. Scooters and low-displacement motorcycles are cheap and fun. E-bikes are getting cheaper. I mostly ride my little Honda motorcycle to the train now, when the weather cooperates. BART's ample motorcycle parking is pleasantly surprising, and a very good idea.