Maybe the moon is made of green cheese and you're the queen of Siam. The melting ice of Greenland is having a measurable impact on global sea level rise. It has been recently discovered that Greenland's ice mass loss includes ice from northern glaciers that had been previously considered secure from melting. Just as have a dozen other indicators, this tells us that the situation is getting worse than we thought faster than we thought. You don't have to care, but I think you have a responsibility as a human being not to work actively to put others in greater risk.