Cricket is extremely dangerous!
I (still) play as a wicket keeper and get head wounds at least twice a season.
But back on topic, I believe I have also read that the decline of the use of the longbow can be attributed to the social changes at the time as much as the improvement of black powder weapons. ie not so many 'had enough time' -- to use a modern phrase, to continue the training/practice required to effectively use the longbow.

