To a lot of the posters here... it's true, most families (including me) prefer to live in ground related housing and not skyboxes. Just as most people prefer to eat natural food and not hydroponic or caged animal food. 

However, if we keep paving Central Ontario farmland at present rates, natural locally grown food is no longer an option in 50 years

Go greenbelt. Pave marginal non-agricultural land and redevelop old industrial warehouse lands, it's not rocket science.