Different groups with their own political agendas may have their own motives for supporting Obamacare, but the basic purpose of it is to lay the foundation for severing the link between employment and medical insurance -- thereby eliminating an enormous cost item from the expense ledgers of major U.S. employers. The "beauty" of it, from their perspective, is that it will eventually push all Americans into a government-run system where health care would be considered substandard (and maybe even criminal) by our current standards, and yet nobody would be able to do anything about it because "that's just the way the system works."
You were probably ridiculed because if you feel that way, you are wasting your time reading and posting about it if it is "game over".
It won't reduce costs for employers. Health insurance along with 401K and other forms of compensation are ways for a company to "pay" an employee without having the employees tax burden climb. Without these "under the table" ways of increasing the compensation for employees, business will have to pay their employees more money. It's a game of three card monty. If you don't get compensation one way, you'll get it another.