As we all know, we are inundated with information on all levels. Period.
One of the kindest things you can do in an inundated world is give people a bite sized piece of what you wish to share and then, if they want more, a manageable size bite after that.
Start with a picture that conveys the message all by itself, then expand on that with a little 'brain snack' to make the reader feel good. Starting with that as the basic goal is a nice way to silently request a few more seconds of their precious time.