My dream is probably to get my sons to Canada,

[fujiyama]

43. I think it's a good idea

but I wouldn't encourage them to look at just Canada/Europe. Australia is another English speaking country with a strong economy.
australia and New Zealand also have something called a holiday working visa, which I regret not doing. It allows people in their twenties the chance to live and work there for like a year. I'd tell them to look at all international/study abroad options available. Latin America would be great, as would many parts of Asia. Obviously some countries may require certain language skills, but if they can attain these, that's a great advantage.

It's important to get different perspectives of the world. Perhaps, they'll find a culture or environment that better suits them, or maybe they'll figure that they miss home and they'll end up back here.

As we've seen the world is more globalized and interconnected now. And that's not going to end anytime soon. Canada is a good start. It's a neighboring country with a similar culture, but the government does have a basic safety net in place - not having to worry about going bankrupt due to medical bills is a big plus as far as I'm concerned. It also allows people more job flexibility and creativity possibly allowing them better entrepreneurial opportunities as well. However, it's worth keeping in mind that depending on where in Canada you live, the cost of living can be fairly high. For example, Toronto and Vancouver are two very expensive cities...