I have a number of food allergies, so I avoid those things. Beyond that, I don't really care. I used to count calories, grams of protein, etc., but I found that behavior just made me feel a bit crazy. When I lived in LA, I had a trainer, meal plans, etc., as did most of my friends. I got good results, but found that being so strict really robbed me of the pleasures of eating. Not to mention that conversations about how many protein grams to ingest, when to eat, etc. became rather ridiculous after a while.
Where I live now, none of my friends cares about all that stuff, yet they're in better shape than my LA friends and not nearly as neurotic about body image. Eating is common sense, in my mind. Avoid the processed crap, eat lots of veggies, and try to achieve some measure of balance between your carbs, fats, and proteins. And steer clear of the booze!
Anyway, to each his own, but I know that I'm much happier not being a slave to my diet/exercise routine.