Aside from stigma, what are the common challenges or issues that come with extended breastfeeding?

in my case, my baby was more than 2 when i had to make her stop. she used to bite me and i had developed infections all around. so that is an issue, that you can get infections from the baby's teeth. also, it became extremely difficult to get her to wean, as by then she was too attached. i dont think there is any stigma attached to extended breastfeeding.