I understand peoples annoyance with this. For me, I like to stay fit and healthy; actually that's a stupid thing to say, everyone likes to be healthy. What I mean is that with 2 young kids (6 + 11), I want to be active, and at 46, that means taking care of myself. So, I usually have two days off the booze a week, and eat in moderation.
However, that all goes to hell in a handcart in December as my birthday is at the beginning, NYE at the end, and there is a lot of drinks, rich food and enjoying ourselves in between and definitely no days off or moderation. So, of December has been a bit heavy, I have a break in Jan for a bit.
I'm quite into nutrition, a side effect of cycling / running, and one of the main things I have learnt is that diets are like religion to some people ~ and many folk get all fundamentalist about it. Any criticism of their chosen 'path' is like saying you would like to eat the baby Jesus or something. They oft need to evangalise about it to everyone as well, so can totally get the OP's point.
But some of us really are just taking it easy for a bit! :)