But that's not really the issue here, is it? You're up against the demonstrated fact that only a minority of the population thinks this is good for them as individuals, or for the country as a whole.
A substantial chunk of the opponents of the ACA oppose it not because they don't think it's good for themselves or for society, but because they don't think it's good enough--they want single-payer universal coverage.
And a substantial chunk of the people who oppose the ACA either only oppose it when you call it "Obamacare" (I trust you saw the interviews where people said they supported the ACA but were against Obamacare?), or oppose it now, in the wake of three years of GOP/FoxNews wailing that gubmint bureaucrats will get to decide whether our grandmas live or die, but will likely cling to it fiercely once it actually comes into effect. I'm sorry but I just find it hard to take an argument seriously when you see many of its proponents doing things like opposing "Obamacare" but supporting "the ACA," or standing outside the Supreme Court with signs that say "Keep Government Out of My Medicare."
Then you might also consider what happens if you carry your "no man is an island" argument to its logical conclusion. That homeless guy over there isn't making much of a contribution to society, now is he? Wouldn't it be really good for society as a whole if we just broke him down for spare parts? I'm sure he'd provide material for a dozen deserving, productive organ transplants.
Do you really take that argument seriously? Or is the web obscuring your sense of humor? BTW, if you refer back to my post, you'll see that I mentioned not only the fact that in a Democratic society we do the stuff that most people vote for us to do, BUT ALSO the fact that the majority rule in this case was also ratified by the Supreme Court's decision finding Obamacare constitutional. Do you think they'd find it constitutional to chop up homeless people for spare parts? That's a rhetorical question, by the way.