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I used to be of the same opinion, but after giving type hints a real try, I changed my mind.

You should not see type hints as real, hard types, but more as a kind of documentation that helps your linter and type checker catch mistakes.

Because Python has a lot of things it's great at (numeric stuff, ML, computer vision, scripting), and with types you can actually rely on it to work. It's the best of both worlds.

I sometimes felt that Python was rather strong in many parts of typing. As such being able to track what type of something is would often have been useful. Instead of waiting it to crash to some error.

Like back in 2.7 difference between byte-array and string... Offloading such cases is mentally useful.

> Why not use them?

Because you can now use typing WITH the entire Python ecosystem.