I don't but not because I'm such ultra conservative, narrow-minded individual. I'd argue that these city rankings are actually the last thing any good city should be concerned with. The best cities automatically rank at the top and shuffle about dependent more upon the parameters of the specific study than any actual changes in quality of life. Everyone else strives to become something they're not and lose any sense of individual urbanity. Plus, to meet the requirements of an Alpha+ city is just to be open to business. You could have a horrifying quality of life for anyone making less than $50-100k a year and still be super high ranked (like New York, London or Paris, just off the top of my head). Toronto isn't perfect, could definitely improve and has serious problems with political stasis but I'd be incredibly happy if we stopped trying to be a ranked city.
Also, in terms of those rankings we're already highly ranked anyway lol We're an Alpha city, no? The difference between Alpha and Alpha+ is minuscule and really not something worth worrying about if you do care about the ratings, in my opinion.