I have had the same issue in the past in the Bay area. I finally got a clipper card a few weeks ago (I live in MV typically walk to work). Yesterday, I was in front of a VTA in San Jose trying to get back to MV. The people around were a bit shady, and there was a pretty long wait for the train - of course .. I called an Uber, which cost a few bucks more. Still waiting to use that clipper card.