Ruby is truly nice, I just wish I had the option for static typing built into the language, as a human I prefer it because then IDE support is much better for any refactor, etc and getting to maintain other people code.
You're not alone. Stripe has been working on adding types to Ruby with their static type checker, Sorbet: https://sorbet.org/. This seems to have a bit of momentum at this point. Assuming it continues in popularity I'm excited to see how this helps to improve Ruby work in an IDE.