Wow. I didn't realize how risky it was riding Caltrain from Diridon to Bayview. I did it every day for 2 weeks before I moved to Seattle. Then I had to walk several blocks in Bayview. The biggest pain was a bullet only stops at Bayview every hour. If I remember right, I had to pick getting to Bayview at 7:30, 8:30, or 9:30. It was the same going home with 4:30, 5:30, and 6:30 as my choices to leave. The area didn't seem unsafe. It seemed to be the same the same crappy row houses that are everywhere else in SF.