As someone who immigrated there and became Canadian before leaving recently, I'm going to piggyback on this.

4) Limited career opportunities: First, depending on your background, there are real & artificial barriers.

If you're in the trades or in medical, etc. you need to go through difficult relicensing exams. Many people find out that they need to restudy something like medicine in Canada, and end up giving up and accepting a lower standard of living.

On the artificial side, you'll be ignored due to your lack of "Canadian experience"; salary negotiations with employers who behave like they're doing you a favor. God help you if you graduated during a downturn. Everyone I know had to change careers just to live here, including myself.

And if you're coming from countries with low pay but generous benefits otherwise, in Canada you more-or-less get American-style benefits with European-style low pay. I'm not even talking about how it's a pretty small economy and certain industries just never took off here due to the U.S. being right next door. So if you're an expert, you'll very quickly reach the glass ceiling where there's nothing higher for you to advance to because you're not part of the Canadian aristocracy i.e. families that own the big three of each industry.

5) Relationships with the locals: I often tell people that Canada prepared me well for Japan. Both countries consist of interactions with people that are generally polite and nice on the surface, but otherwise don't know how to extend any warmth into any relationship, whatsoever.

For the longest time I thought this was just around the corner - a little more integration, a little more of being outgoing, etc. Nope. Every single other immigrant to Canada I met eventually just figured out that they were better off having only other foreigners as friends beyond work relationships. Every single on went through some episode of being ghosted by a native.

Moreover, I've come to realize that as they age into their 30s, 40s, Canadians even end up losing friends with whom they've spent their whole life! I've seen this with my own spouse. Friends from childhood, adolescence, and young adulthood that just sort of drift away. Sometimes not even that, but the relationship just withers away slowly because no one knows how to take the necessary steps to keep the fire going through life changes since society just doesn't prepare them for it.

This isn't the U.S. where a sixth of the population moves every year to a different state. Most people live in the same city they were born in and once they lose a friend, there's just a hole there that never fills back up. In this way, Canada is closer to many other countries in Northern Europe; from the experiences of expats living there that you read about here.

6) No idea of what it wants to be: This maybe rings much more personal to me than for others but after more than a decade in Canada, I was frankly tired of living in Diet America™. And I don't mean the huge malls and parking lots.

In deeper ways, I feel like Canadians have completely lost touch with what makes them a separate nation from the U.S. besides pathetic anti-American memes like "but we have healthcare!" There is a still a true Canada somewhere deep in there, if you live there as long as me and try as hard as I did to integrate, you will see some signs. It is probably not the liberal tolerant multicultural country we see today, but it's truer to its roots, its history, and its actual issues and is probably more capable of finding solutions for them.

In real life when living there though, you'll mostly just see that the Canadians will always choose the comfort of downplaying, ignoring, and erasing their own history and identity for the latest political fad that they have been convinced to follow through on due to being completely culturally colonized by the Americans. This why Idle No More got hundreds of thousands out in the streets, but Black Lives Matter drew out millions. Both are important issues, but the former is more important for Canada. This is just one of many examples.