It always has been, at least in a professional environment. I used to work at a Apple reseller. We would have to advise customers to keep running old versions (

It always has been, at least in a professional environment. I used to work at a Apple reseller. We would have to advise customers to keep running old versions (sometimes up to 2-3) because of 3rd party compatibility lag. From my point of view it has been improving over time with earlier dev. versions of the Os. But must agree I'm also still hesitant to run it on my workhorse.