Titles are Everything

I despise the title "Professional Philosopher" - I will never call myself that.

There is no such thing as a "professional philosopher". There are, to be sure, "philosophy professors", i.e. those who teach philosophy professionally. But no one does philosophy professionally. Philosophy just isn't something that one can be paid to do.

Or, in other words, if you're getting paid to do it, it ain't philosophy.

Addendum:

It should be obvious that, in order to be good at teaching philosophy, one must be good at doing philosophy (although the converse doesn't hold).