Doing some good in the world does not have to be hard or expensive. Our local pet shelter needs a new wooden bench for their play areas. They serve as places to sit and dogs to pose on for pictures.
For the cost of scrap plywood, a couple 2x4's, and an hour later and I'm mostly done. I even have enough for a second. They just need a quick sanding and a coat of varnish.
So let me ask... would my two hours be better spent posting about injustices or using my skills for some meaningful good.