[dmd]

I think when I walked back into my defense and they said "congratulations, Doctor Drucker" was the last time anyone ever called me Doctor except for possibly a hotel clerk when I selected 'Dr' as my honorific.

It's just not in the culture, assuming you mostly work among other PhDs.

[kkielhofner]

Growing up my dad was a very well known PhD in his field (Occupational Therapy).

There were quite a few people who insisted on using Doctor when referring to others, calling themselves Doctor, etc.

He never did but I experienced it quite a bit.

[dmd]

I'm talking about scientific/research PhDs, not medical. The title is absolutely used in medical.