Why do you need to drive downtown?
Simply put because cycling doesn't work for everyone all the time.
I love cycling, but it works best when you're by yourself and don't have much to carry.
Have a young family? Probably aren't all going out on bicycles. Especially if they're so young they can't even ride bikes.
Have elderly parents or dependents with health or physical limitations, probably aren't shuttling them around on bikes.
Have to go to business meeting in business clothes? Not fun to arrive all sweaty. Have a date? Likewise.
Have groceries or large items? Not possible to carry on bikes and not everyone wants to shop online and have everything delivered.
Miserable weather out, rain or snowing like it is half the year here in Toronto, no fun to be riding.
So take transit for all those things? Transit is great sometimes, but other times doesn't always feel safe from a health standpoint or these days even a safety standpoint.
There are still lots and lots of reasons to be driving downtown. Lots of times it's actually faster, more comfortable and more convenient. We're not L.A. where you need a car, but we're also not Manhattan or London or Paris where having a car downtown seems insane.
I'm not against any of the pro-cycling or pro-transit initiatives at all. Bring 'em all on. The more people on bikes and transit the better. But I'm absolutely not anti-car either and I don't think you have to pick a side. And I think it's childish when either side demonizes the other.