As someone who has worked on addresses for a large corperate system, addresses can get very complicated. International localization, formatting, different usages (shipping, billing, mailing, taxes), multiple addresses per user, and security all start to add up, with many different part of the application having different requirements. Even as the team that owned addresses we debated whether new use cases should spin up their own implemention. Though it's pretty interesting seeing how different countries do addresses differently.for example, users in South Korea expect to be able to search for addresses and just enter an apartment number. Some countries went to near 9 lines of info.