Using your logic against you, it appears that most Americans DON'T want this monstrosity: with the most recent approval rating at 44%, it appears the GOP is taking the right stance. I mean, if the approval of the President is at 44% it's CLEAR that most Americans don't support this.
And since the left has a problem with math (seeing as how they all think healthcare is now free), I'll have you note that 44% < 50%, meaning it's NOT a majority.
In fact, support for Obamacare itself is also under 50%. Again, please note that the "under 50%" thingy makes it NOT a majority.