The world is over populated.... so why is Canada encouraging more mass immigration?

In the future Canada's greatest asset will be it's low population. If high population is bad for them why is it good for us? It is a myth that Canada can keep on expanding, we do not need replacement workers, people will live longer in the future and be able to work longer too.

In countries like India, China, Africa they are no Christian. They are not obsessed with death, sex and marriage. Children are raised communally and in a village Overpopulation is not the problem as over globalization. The problem starts when everyone in Africa started buying western junk and living the western greed-dream. So this Canadian problem to promote abortion is very suspicious.
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The Canadian government needs to get out Canadian lives and the whole world's lives!