Just run the numbers.
There's nothing quite like information.
Books are expensive and take time to read: Wouldn't solid tips be worth considering?
Likewise for the videos you rent, wouldn't thoughtful tips save you more than money?
Everyone hates to waste time trying to enjoy a dumb book or a stupid movie.

Maybe you are the get-up-and-go, morning type.
Consider the $400+ you spend each year on that coffee you get on the way to work.
Wouldn't you profit from something fresh to think about while you sip that brew?
Afterall, you probably drop more than 28 cents in the coffee shop tip jar each day.
Besides, it's fun to have something new for the small talk around the water cooler.
It's especially fun if others join in, because they'll be getting the messages too,
only they will never get one quite like you....

Perhaps you are a nighthawk who likes to play bar games to see who buys the next round.
It can prove to be smart to be up to speed on something like the movies or the latest Netflix series
but it takes time to put all that together.

And just consider the alternative: being uninformed, dull and boring,
not to mention, being out of the loop, being the one who doesn't know.