Sorry if this has been talked about before but I looked it up and couldn't find anything.
Bows are nice but I thoroughly enjoy using spears. I'm well into the iron and it's always bothered me how I can't make one of of iron. I'm sure that there's some balancing reason for this because of the damage stacking for higher tier metals, but if that's the case then I'm not sure why there couldn't just have a max damage for all spears if that would be a problem.
Is there some other reason why we can't have iron spears?