I can not be the only one who kinda hates buttons and buttonholes.  I only this year got a machine that can do a 1 step measured button hole - and it does make things slightly easier, but buttons and buttons hole often land my projects in the unfinished pile for at least a day or two longer than necessary.  Honestly, I'm much rather put in a zipper for many patterns (not all because buttons really do have a beautiful aesthetic).  But zippers are quicker to do up on wriggly squiggly kiddos, they are easier on arthritic joints, and you don't have to go throught he button matching game.