When the height (action) is lower, the strings are easier to fret (push down). So surely all players would want lower action – why make your guitar harder to play?

If the strings are higher, they become harder to push down with your fingers – and that means the guitar is harder to play. When the height (action) is lower, the strings are easier to fret (push down ...

Put simply, it's the height your strings are set from the guitar's frets. If the strings are higher, they become harder to push down with your fingers – and that means the guitar is harder to play.