Re: why mods aren't allowed
@tyeshiaj I've moved your post to the Sims 4 General Discussion section.
To clarify, mods are certainly allowed in Sims 4 (or at least the PC version), they're just not officially supported. There is a rule on this site that we can't link mods, but that's because we can't link any third-party downloads that aren't from a trusted source (Microsoft, Apple, that kind of thing).
Of course, mods can't be added to the console versions of Sims 4, but that has more to do with how data is downloaded and stored on a console than anything else.