I suppose they believe that if they repeat them often enough they will stick in our heads, and we will then buy the product.
Sometimes, though, they irritate me so much that I become determined never to buy their product.
"This Morning" itv show has "Making Life a Little Easier" in their ads.
There is "because you're worth it" of course.
"Every little helps" from Tesco.
Do you like them as reminders, or do they get on your nerves?
I imagine a group of people sitting in a meeting spending hours discussing before they come up with something like "you'll feel better because we love you" or something equally inane.