I've lived in Vancouver for 15 years and have no idea how you can even come close to those conclusions. Maybe you live in a different world than me but I have never felt close to unsafe in the city and don't know anyone with health problems in their 20's. Yeah, buying a house is expensive but rent isn't unreasonable if you're ok with roommates. In the summer I'd argue its one of the best cities in the western world. Beaches, mountains, and beautiful people.