It might be fun to answer the thread's title, "why are you here americans?" from a general perspective, as opposed to why we are on line. I will start...
My english roots settled in the 1600s in Milford (or new milford?) Connecticut. They left England, (chalgrave area?) to avoid paying taxes, and religious freedom. It is documented they obtained the land through barter, giving mirrors, and other trinkets to the natives.
My german roots, several lines, left Mechklenburg (sp?), Bremen, Hanover region during the 1870s when german nationalism was trumping principalities. They probably did not like Bismarck's politics.
My scottish roots? Don't know, they were probably bastard children.