M.E.
I never "enjoyed" breastfeeding-so it makes me a bit sad that it was not the bonding experience some women have.
When my daughter started biting-that was pretty much it. I think it was the teeting stage, and also slower milk supply b/c when we weaned my milk dried up in just a day or so. But I could not stand being on edge at everyfeeding that she was going to bite...she would clamp and laugh and it was really painful.
If you do wean, go to a bottle, I do not think he is likely ready for other methods. And I learned that bottle feeding is not as convenient as it seems, having to train my self to bring the ingredients and the means to mix a bottle-it is no longer instantly ready, perfectly stored and at the perfect temp.
Just do what feels right for you.