It's one thing to concede that you like the taste of unhealthy foods or that you only care so much about your health, but it's another thing to try and discredit the information just because you want to feel better about your choice to eat unhealthy foods.
What a lot of people need to understand is that it's not just processed meats that are bad for you, but just about any meat you cook. Cooking meat can easily create transfats and charring. The transfat is terrible for your heart and the charring produces carcinogens. You're improving the quality of the meat if you can get it organically grass-fed and free roaming, but you're still making it quite unnatural when you cook it. It's very, very difficult in the modern day to eat meat in a manner that does not contribute to cumulative health risks.
As a runner you should be concerned about boozing. Admittedly, I had several beers yesterday at a concert, and do not pretend to piously lead by example. But booze poisons your liver and your liver is responsible for making your red blood cells. Boozing can basically retard your red blood cells for a day or two. Yeah, you'll generally get over it, but it is a setback and maybe some day your liver will sooner have tiny malfunctions on the cellular level hastened by a tendency to booze once in a while.
Most reasonable people aren't going to give up a few vices if it's worth a 1% savings on longevity, but that's not really how the averaged statistics work. You could be the guy whose cells start dividing malignantly 20 years before it should have been a real threat all because of some freak thing that happened after loading up on a food that was colored brown using caramel coloring (carcinogen). You could be the person who gets dementia super early because the monosodium glutamate in your Doritos eeked into your bloodstream to the brain and ran wild. Or you could be the totally healthy guy who just has one cell randomly go haywire and it's curtains. But if you pay attention to health and improve your odds you could see real improvement; this would be particularly observable across a large public health demographic and is why parts of Europe are seeing improved health outcomes. Pockets of should-be-educated Americans are seeing worse health outcomes precisely because they read articles like these and try to deny the science or minimalize the impact.