Why is it not advisable to go to the United States or Canada without travel insurance?

In countries such as the United States or Canada (but also in Australia, Japan, etc.), the cost of medical care is very high.
Unfortunately, an accident or illness does not only happen to others. Thus, if you encounter this type of situation, it is essential to have an insurer to support you financially in case of need for medical care in these countries.
You will be reimbursed for your medical expenses, which can amount to tens of thousands of euros in many countries. If you are going to these countries as part of your studies, internship, PVT and even professional stay, it is mandatory to take out travel insurance.