Pearson is a necessity for the millions of Canadians that live in southern Ontario and want to fly all over the world. Which is a lot of people given more than half the population was born somewhere else.
It's hard to like a place when you don't have any other choice. It's also not the worst, as far as airports go, this one is adequate.
There is a new train that connects to downtown, it's pretty good.
Over all the airport is like a lot of Toronto, not bad but there is something a lot better elsewhere.