[quote]Y is completely irrelevant compared to the rest [/quote]By extension we should only care about the handful of problems that dwarf all others? [quote]One who defends everything, defends nothing.[/quote]I dunno whether you picked this just because it sounded smart, but that's not what's going on here. Maybe the empathy section of your brain didn't develop properly, it seems to require some especially strong stimuli to even function. I can easily care about X and Y.

Priorities. Empathy is an obstacle. And the is exactly what is going on, you can't change the world by going after all the problems, you must put your time and effort into solving the most critical. And being "nice" isn't one of them.