I admire folks who are vegan, especially those with ethical concerns, but I have not made that switch.
I do eat less meat, and lately I'm planning to pay a little more $ to source meat from organic sources. I eat more fish now, and well sourced chicken. I think the the field of non-animal meats seems promising.
I cut out almost all bread, and almost all pasta, barring the rare indulgence. Cut down on sugar, but still eat a good amount of chocolate. Never drank soda. It's water, wine and beer for me. No white rice -- only brown
I think the next step for me would be to cut down on red meat even more, and do the same for potatoes. I could cut down on cookies and chocolates a bit more too.
I'm pretty sure that a few hundred years from now, we are going to look back and be horrified that we actually killed animals to eat them.