To seek a better life. The society in Britian was unfair to those born into a unfortunate class(peasants and such). It was very limited to move up in the ranks. Religion was very strict as well. Therefore some pilgrims packed they're bags to start fresh in this great nation we call America today.
Because of Taxation without representation...basically King George was saying pay me all your hard earned money but I'm not gonna give back and help build your community!! most of all they wanted independence !! why pay respects to a King that never even sets foot in the country??