Putting shopping carts away is bad for society and you should stop doing it.
The reason is that putting a shopping cart away requires labor, labor requires a person to do it, and the person who has to do it is employed by the grocery store.
Thus, if enough people refuse to put their shopping carts back, enough excess labor will be generated at grocery stores around the country that they will be forced to hire more people to do it, creating jobs.
QED
:100-com: oh yeah for sure that's why all of the checkout counters are closed and now I have to do it myself while the world's most annoying voice tells me to "please place the item in the bag"