I am cattle. No upgrades for me. Often I walk or drive. Maybe, I might fly 4 times a year, rarely on Air Canada.

Is Aeroplan a good ffp compared to United Airlines Mileage Plus. United now gives miles based on the fare paid, not the distance flown. Looking at Aeroplan, doesn't Aeroplan give miles based on distance flown on United? If so, shouldn't all semi-frequent United passengers use Aeroplan?