Has anyone worked on a cannabis related idea?

I live in California where it is legal. A lot of people here seem to enjoy it, and honestly from what I've read it seems like it is probably not as bad for health as alcohol or smoking.

All that aside, I've been getting comments like "nobody is going to hire you in the future if you work on this" or "why would you want to build something for stoners" which is kind of surprising.

Has anyone worked on a cannabis related app, such as weedmaps or others? What was your experience like?