Just moving the historical context on slightly to the hundred years war, looking at the English and their initial devastating use of the longbow, they were using massed archers with a combination of men at arms/knights. Up against the French crossbows, in this case the crossbows just werent that good because the Longbows could reach the crossbows wuite a bit before they could reach them but to train a longbowmen took years and years of practice. To shoot a smaller bow could be achieved quicker but not much quicker.
Simply it took time for a peasant (as that's what the bow was, a peasant weapon) to learn to use the bow and they had better things to do such as avoid being raped/pillaged, sowing and gathering the crops.
Also your stating that the main reason was not for the archers/skirms etc to get the hoplite or whatever to discard their shield. For this to happen they would have to masse a lot of men, the army with the predominantly archers would need to be huge in comparison with the enemy for the arrows to have that massive effect. Armies, on the whole, just werent as big as that for quite some time.
edit- your was implying the OP btw.
Simply it took time for a peasant (as that's what the bow was, a peasant weapon) to learn to use the bow and they had better things to do such as avoid being raped/pillaged, sowing and gathering the crops.
Also your stating that the main reason was not for the archers/skirms etc to get the hoplite or whatever to discard their shield. For this to happen they would have to masse a lot of men, the army with the predominantly archers would need to be huge in comparison with the enemy for the arrows to have that massive effect. Armies, on the whole, just werent as big as that for quite some time.
edit- your was implying the OP btw.