Why Do Audio Engineers Use Different Speakers?

Below is a link to Steve Hoffman's equipment. He is (in my opinion) the best engineer in the business today.

Look at the wide range of speakers and equipment he enjoys.

http://www.stevehoffman.info/equipment.html

Steve Hoffman certainly has some fine audio gear.
But are his speaker choices typical for most engineers?

Am I wrong when I write "I hear they tend to use smaller self-powered speakers the majority of the time."?

The same reason nobody drives an F1 car down the interstate. For the engineer the speaker is a precision tool used to to manufacture a product. Unike the audiophile listening pleasure does not enter into the equation.

Yes, I recently was surprised in meeting an audio engineer in New York City who has spent a life time working for Sony, his home speakers were a self made single driver tower pair. Better then some $10,000 speaker pairs I have heard. The drivers were purchased from Radio Shack twenty years ago. This fellows job is to do audio mixes for TV programs. Aside from a grand piano, his audio equipment was a mix of mid fi, but he did have a VPI turntable. Perhaps in doing audio for a living, they want to give their ears a rest in off time.

hoffman is also a collector and an audiophile. the two are very different. the hobby of collecting,swapping,upgrading, downgrading,and arguing about different components has no relationahip to the music or recording industry, or to most music nuts and collectors. one of the most knowlegable music people i know has a 20 to 30 year old system consisting of old series bose 901's/crown gear that looks like a truck ran over it/an old kenwood turntable/and an old first generation phillips cd player. he would rather get a root canal than discuss components. different strokes