Our biggest monthly expense is for medical insurance which comprises more than 40% of our outlay. In Canada you are covered as you have a sane goverment. In the USA if you get sick you are SOL unless you are prepared to pay tens of thousands. I spent 3 hours in the emegency room with chest pains and left with a bill that was over $3000. I later had a 30 minute ultrascan and the bill for that was $1700. And that was inspite of paying $800 a month for medical insurance for myself. If you can arrange to get sick only when you are in Canada then you will be fine.