Recoil in guns is caused by the barrel of the gun restricting the flow of energy from the explosive launch of the bullet. [...] Recoil would make zero sense.
Aye, I’m aware of the “equal and opposite force” issue that causes recoil. It’s not my intention to say that a bow suffers an identical physical phenomenon (at least not significantly). However, there are many details which cause a loss of accuracy in archery, which for the purposes of fun could be reasonably simulated by recoil.
Again, from experience: clenching the handle too tightly, which changes the direction of the limbs as soon as you release; allowing the string to slide across your fingertips during release, which will twist the string; allowing your arm to droop ever so slightly during release, which may be even more likely depending on how you draw the bow; poor or no use of anchor points - spots used to ensure that your form is consistent from one shot to the next (such as having the string cross the face in the same position each time), which is going to be even more important for accuracy if the homebrew bow isn’t equipped with a peep sight in the string and a set of pin sights on the limbs.
When you can take the time to make your shot, these aren’t going to hurt you… much. But if you’re rushing to spam arrows at an approaching Jabberwock, chances are good that your accuracy would suffer. And that could be reasonably approximated in-game by calling it “recoil” and moving on. It’s down to what the devs like, really.
As to chafed hands - well, there are leather finger tabs for that (and release aids, which take your fingers out of the equation entirely, and they are awesome). I find it’s more likely that while spamming arrows, you’ll slap your arm with the string - which throws the shot and can give you a nasty blood blister down the length of your arm. This is why you often see competitive archers wearing an arm guard. I never use an arm guard personally, because I’ve seen blood blisters that start higher up the arm than where the guard is, which means the string would’ve caught on the guard and caused a more serious injury. Considering the mosquitoes where I live, I just wore thicker sleeves and controlled them with rubber bands if necessary.