Eh, @MaryGJ , it’s not time-consuming, and your comment makes me wonder:
Which is the bigger waste of time, commenting on FB or writing comments chiding people for commenting on FB? Instead of worrying about other people’s use of FB, maybe you should take a walk outside or “come up for air once in a while” 
Tilting at windmills vs. tilting at tilting at windmills…hmmm…tilting at tilting at tilting at windmills? We could do this all day!