The thing is, stopping global warming is not easy to put it lightly. Even if we start trying to minimize our impact on global warming and reduce emissions, it will take at least many decades to undo the damage that we have already done. In the immediete decade or two, the consequences are not very serious, but global warming will not be something that we can just say one day that we will stop it, but will continue for decades or centuries at which the consequencies pile up and becomes severely more dangerous. Having sea levels rise by an inch or a centimeter isn't that bad, but if that occurs continuously for a century, those people living below sea level or even at it won't be that happy