BT: you gone crazy? who would leave Canada for US man??? the only way i would EVER leave Canada is if they offer me 500K + Salary
No it wouldn't take much for me to switch borders (either way). I've been to almost every corner of US and found it just as appealing as Canada. There are areas that I liked more than anything I've seen in Canada (certain spots in California, Arizona and Texas). Heck I even liked New Mexico!
The Canadian weather is a total deal-breaker for me. BC has the best weather in Canada and it fucking rains all year there.
Spend a couple of months in California, Oregon, Arizona and Texas and you'll know what I mean. You can't put a price on year-long moderate weather. Texas and Arizona get hot, but I didn't find it as crazy as some make it sound. After 20 years in the frozen north, it wouldn't make me run away.
There's also the business aspect of things. The US market is much more fluid with less red-tape than Canada. Health-care is an issue when you're older, but for younger people, the US is a more rewarding place.
Overall, I wouldn't mind a move to either Silicon Valley or somewhere between LA and San Diego at some point, but I don't like the direction California is going in.
One of the most beautiful and attractive places (for me) in US was El Paso Robles in California. Too bad it's quite far from almost everything!