Except that the data shows there's a time lag between adding CO2 to the atmosphere and an increase in atmospheric temperature, ocean pH etc. By the time the effects of ocean acidification and temperature rise become a serious problem, we may well have locked ourselves into making thousands of species extinct, with untold consequences to the ecosystems that depend on them (see
coral reefs for example). Ecosystems are fragile things - sure, they'll find a balance one way or another, but that 'other' way is likely to be a whole lot less beautiful, complex and interesting, and sure as shit won't take long-term human welbeing into account.
I think the reaction against some of the climate change 'deniers' posting on this thread (throwing insults at them and implying they're uneducated) is largely because of their refusal to even consider the
risk that the scientific consensus might be right. Even if they have some doubt about the cause or scale of the problem, if after taking a rational look at the data and reading arguments from both sides of the debate, they still think there's no risk of serious climate problems, or nothing we can do about it, then their level of education should rightly be called into question.