It's mature. The community is mature (in multiple senses of the word). The ecosystem is mature. The package management is solid. There are drivers or SDKs for basically every tool or service I would want to interface with.

The syntax is rich but concise. It doesn't require compilation of binaries. It does OOP pretty well. It does procedural pretty well. It does web pretty well. It does throwaway command line scripts pretty well. It does performance well enough for the things I do with it. It's portable.

Python isn't perfect, but 99.99% of the time it gets out of my way. I must, can, and do work with other languages. I constantly find them frustrating me in small ways. Python generally doesn't do that.