But then you don't need uv. The pain point uv solves is projects. Different projects with different dependencies (even the same but different versions), multiple people, teams, and environments trying to run the same code.

That gets problematic if environments go out of sync, or you need different versions of python or dependencies.

So you are right, you probably won't benefit a lot if you just have one big environment and that works for you, but once you pull things in a project, uv is the best tool out there atm.

You could also just create a starter project that has all the things you want, and then later on pull it out, that would be the same thing.