Like some people have implied in their comments, OO can be “useful” and is mainstream. But so was Assembly Language which I wrote in for years.

Do I want to write in Assembly anymore? No. Are there pitfalls of Assembly? Yes. Did I feel the need to write a Goodbye, Assembly Programming article? No. Why? Because the pitfalls were obvious.

OO is far more a religious issue for people than Assembly ever was. Most developers 30 years ago didn’t have to deal with the complexity we have today.

Many developers have only known this complexity. What they don’t realize is the OO has added unnecessary, additional complexity because that’s all they know.