If the entire world decided to become vegan tomorrow, a whole host of the world's problems would disappear overnight. Climate change would decrease by 25 percent, deforestation would cease, rainforests would be preserved, our water- and air-quality would increase, life-expectancy rates would increase, and our rates of cancer would plummet, so certainly, with that one action of becoming vegan you are quite effectively making the world a better place.
I guess I knew my dad was into photography, so a part of me was interested in picking it up to understand him a little better.