You see, putting most of the universe into the "not my business" bucket is pretty close to putting it into "not my problem". A category that I like things living in.
Some might call it laziness. They would be correct.
But it's also emotional protection for me. There are some who get up in arms & extremely involved in Every. Little. Thing. I can't do it; I don't have that much emotional energy. My way is much easier! Michael Phelps doing drugs? None of my business. One of the Bush daughters drinking? Also none of my business. Tiger Woods dallying? Certainly none of my business, and I'll thank you to stop reporting on it, Every Single Network! Private lives of my coworkers? I may need to take my earplugs to work with me.
What is my business? Caring about my friends. Being aware of those around me. Showing kindness. Doing my job without causing a fuss. Loving others. Acting like Jesus.
Turns out there are a lot of things that are my business, after all.