Would the USA have been better off if it lost the War of Independence?

I look at the CommonWealth ie. Britain, India, Canada and Australia - and I sometimes wonder if America<what is now the U.S.A. >would have been better off if it had remained part of the British Empire. For example, it would be indpendent just as India, Australia ,and Canada are today independent. It would likely have ended slavery more quickly without a war, and it would have likely been more restrictive in regard to Westward Expansion with less destruction to native american culture... Also the modern USA might be more peace loving, have universal health care and less poverty... Could it be that America would be better off if say that wicked old slave master plantation owner,George Washington was hanged as a traitor and the American colonies were allowed freedom to develop without slavery and ruthless westward expansion?