> Honestly, there aren't that many crazy people on the SF Muni/busses. The detractor for taking these services is speed and frequency.

Everyone can form their own opinion on the acceptable number of visibly intoxicated people they’d like to encounter. That said, my understanding of the law is that the correct number is zero. So seeing more than zero is an indication that laws are not being enforced.

People can debate whether particular laws regarding drug use are justified. However, if enforcement itself is optional, one might reasonably question whether that applies to other, less controversial laws as well.