My other reference is just as personal and perhaps just as irrational. Java was free to use. Then after many people and companies used this free tool, Oracle came along and wanted to exploit the fact that people had an investment in this. Yes. I know. Oracle can do what they like. They own it. But I can do what I like and that is not to use anything associated with Oracle. Ever. (EDIT: and yes I do know there are open source JVM's)
So, no. I guess I am not professional.