Because food that has been eaten secretly has no calories??
a) because its something for me that no one can interfere with
b) because I dont want anyone to see how much I'm eating
c) because I dont want anyone to see what I'm eating
d) because I dont want to share whatever it is with the kids LOL
Those are in no particular order by the way - just some of the issues taht spring to mind for me.
I find that when I know I am going to be at home in the evening I buys loads of unhealthy snack and a big takeaway dinner and just sit and pig out completely and then throw away all the wrappers before anyone gets home. I wonder why I do that!