Trying archery takes time - but once you're used to bows, is one of the best weapons you will ever find.
Crossbow is more like to aim and shoot - but reload it, fuck, you had to be a strongman and lucky in battle.
Everyone could shoot a crossbow, because is not really a challenge; but wasn't really a good weapon in battle.
Plus, as an anon said up, it was a weapon for weaks who coudln't shoot a bow.
Lionheart died after he was shot by a crossbowman - under hands of a little guy that barely has ate in that day and possibly couldn't shoot a bow because he hadn't the strenght to.
>In the early evening of 25 March 1199, Richard was walking around the castle perimeter without his chainmail <-(this was stupid), investigating the progress of sappers on the castle walls. Missiles were occasionally shot from the castle walls, but these were given little attention. One defender in particular amused the king greatly — a man standing on the walls, crossbow in one hand, the other clutching a frying pan which he had been using all day as a shield to beat off missiles. He deliberately aimed at the king, which the king applauded; however, another crossbowman then struck the king in the left shoulder near the neck.