Realism of tedium does not a better fantasy RPG make.
Speak for yourself

Take your own advice.
BG1/2 had A FEW interresting items with unlimited ammo (1 or maybe 2)... not every single one.
BG2 alone has 5 ranged weapons with unlmiited ammo property.
That's exactly why they were interresting.
Speak for yourself

They were more convenient then interesting, given how you needed +5 weapons to damage high level enemies.