As a professional touring bass player
Yeah, duh!
It’s really easy to learn bass. Double bass, thank the Lord, is easy to learn once you understand its mechanics.
It is, however, a lot more difficult to master and use musically than other instruments. This is because it requires a certain mindset and attitude that is not common in the wider instrument family. It’s easy to identify the ‘guitarist on bass’ or ‘frustrated guitar’, as they are commonly known.