I pretty much eat and drink what I want, because I can. I could eat bird food, stay out of the sun, never drink alcohol or take drugs, not go out at night, and not talk to strangers, but I'd rather enjoy the little things in life while I still can. I have a lot more stamina than anyone 10 years my senoir who have spent their entire lives trying to stay in shape. There may be things wrong with me I don't know about, sure. I'll have more wrinkles and maybe die sooner, too. Regardless, age gets us no matter what, so if I can eat five guys every week and not get fat, then I am, because it won't be long until eating like that will give me a heart attack. My point is that while I can still get away with it I will, and when it is time to make adjustments I will (as I have already had to do several times).
I jumped on the quit carbonated beverages thing a few months back, because I didn't like being dependent on caffine. I can't stay up late and ride the caffine high the next day at work without my body kicking my ass anymore.