Sticking to what one knows saves one time, energy, and resources, eventually.
An example of economy of space and time, has it: "Ben Sherman, Apple, fruit and Steve Jobbs-related concepts."
Defining the 'do-s' renders the 'don't-s' irrelevant, I find.
Dan Ariely, author of the soon-to-be reviewed book Predictably Irrational, wrote the following on his blog.
"So now we have two roles for brands: they help us tell other people something about ourselves, but they also help us tell ourselves a story about who we are."
I concur. Especially with the latter part.