[idiopathic]

It is scary, and they will fire you. That scared me a lot. My first job was with the US Federal Government (I was a scientist at NIH) who had nicer terms, plus a reputation of not being able to fire egregiously bad employees.

But then I switched to the private sector and I have since seen that company fire lots of people quickly. To be fair, none of those fired quickly were H1B holders, and the US citizens who were fired were given very generous severance payments (this is a management consultancy that knows former employees are future customers).

My advice is to accept it, and then feel liberated by it. The same contract allowed me to leave my employer without feeling guilty, which is exactly what I did when I wanted to start my own company.

For me, the turning point was when I wanted to have a family. I just found the idea of being forced to leave the country when your employer does not want to sponsor you anymore too awful, especially as I had experienced it as a child when my father had a UK university do the same thing to him. We had 1 month to pack everything and leave the country.