Answer:
Because you're waiting for documents. Not all late-season filers are procrastinators. While most information documents should arrive by the end of January, like an employee's W-2 reporting wages, or a 1099-INT reporting bank interest, some information documents won't arrive until March.
By some estimates, 20,000 Puritans migrated to the region between 1630 and 1640. A larger share of immigrants came to America seeking economic opportunities. However, because the price of passage was steep, an estimated one-half or more of the white Europeans who made the voyage did so by becoming indentured servants.
This is the accurate answer you are looking for.
They did not like being ruled by a king who was not in the same country. They also thought it was unfair that the taxes they paid to the British we're funding England's wars and supporting their economy.