Wasn't going to respond, but just feel compelled to...
I have lived in the Bay Area for over 20 years, 12 years in SF, and now in the East Bay. I'm in SF, Berkeley, Oakland, Emeryville, and Contra Costa at least once a week.
Personally I do not know anybody who has been assaulted or robbed and I have never been assaulted or robbed. I frequently am in SF downtown, and in Oakland/Emeryville. Both considered "hotspots"; nothing ever happened to me and never felt unsafe.
I do not feel exhausted. I never did anything more than my job (and, yes, I'm in "tech". And nobody ever yelled at me for it.)
The nature, landscape, the parks, hikes, culture, weather are pretty awesome and I'll likely never move away.
Is everything perfect? Of course not!
Is there a problem with homelessness? Yes there is! Maybe we should do what other cities and counties have done and just chase the homeless out to somewhere else, kick the can down the road? HELL NO! I happen to work at a company that actually does something about that.
My sampling set is obviously small (my friends, colleagues, and acquaintances), and so seems the author's sampling set.
The author undoubtedly had his experiences and that's a shame. I'm just here to convey a different view on things and not all of us feel that way.