Installing a carseat is a chore, installing 3 is like trying to wrestle a rabid bear while solving a Rubik’s cube, in a small metal box.  (Which is actually harder than you might imagine, because then the bear wants a turn at the Rubik’s cube, which he un-does all the work you just did.  But hey, he’s a bear, are you going to tell him ‘no’.  I don’t think so!)  It’s hard, it’s taxing, and it’s not much fun.  And now that they are in there, they are not coming out till these children go to college.