aramis erak
Legend
Actually, it's not that hard for a light crossbow - I've done so, and don't have much training. (I've used crossbows in SCA wars in the 90's.) But it's only doable with light weight crossbows and reasonably strong folk. The advantage over a bow is ease of aim; a bow of same weight can be knocked and fired 2-4 times in the same time as reload, brace, and fire of the crossbow.In reality, a pump action croasbow is what 5e d&d characters already have.
No one should be able to reload a crossbow and shoot within 6 seconds while dodging attacks.