You really are trying to twist and turn the real facts. I stated several times that in a City like Amsterdam or London, the intensive network of Underground. / Subway trains are well interconnected. You do not require a car. When you purchase a ticket to a particular destination, it means that you can interconnect very easily between various different subway lines without incurring addition costs!!
Normally if you use the Go Train from let's say Oshawa, and get to Union Station, then you are in the midst of downtown. Walking to your destination is no issue. However. when you drive downtown, and then want to park, it costs an arm and a leg to do so these days, especially during peak periods. Getting on the Go Train takes away the headache of traffic congestion once you enter downtown. Far easier to drop off your car at a Go Train Station where parking is free and then getting a ride on the Go Train. Obviously, you have not used The Go Train!!