Ethics aside. Bodybuilding benefits of protein aside.
It's shown that almost all cases of heart/cardiovascular disease and obesity are directly related to diet.
Drugs aren't the answer.
The answer is really simple. Diet. Cut out the animal products and you aren't going to die from your diet.
I have no problem with people killing animals for food. I do believe it's the natural order of things. And, nothing like a good, hearty protein meal every once in a while.
However, if I can prolong my life be eating less animal products, it's worth exploring.
I've been phasing animal products out of my diet for almost a year now and have shown no poor health results. In fact, exactly the opposite.