Why hasnt a turntable manufacturer produced a table with automatic tonearm return/shutoff?

Maybe there should be another new thread on the subject of falling asleep whilst listening to vinyl.  More than one of us has confessed to it. For me it is unthinkable, maybe in part because I am loathe to run my tube preamplifiers and amplifiers overnight, lest a blown output tube would take out a speaker. (Two systems, both with OTL amplifiers driving ESL-type speakers. In the case of the Beveridge 2SWs, the output stage has 3200V across it to direct drive the speakers, and I don't think there is anyone alive who can competently rebuild a Beveridge ESL panel, even though I have a roll of aluminum coated mylar sufficient to do the job.). But also,  I am riveted to the music, and when I sense that I am tiring of it or that it is time for bed, I pack it in.

I think for those who insist they need auto-return and shutoff feature on their TTs they probably deserve their pain and should seek substance abuse help. LOL

I would not buy a high-end turntable with this unnecessary crap. At this level I want sonic excellent that isn't compromised with unnecessary features.

lewm, asleep or awake, how can one avert damage to speakers by a blown output tube?

Years ago I damaged two woofers in my Duntechs when a phono stage I was auditioning for a manufacturer sent DC through them.  I was awake but don't know how I could have prevented it?

Otherwise regarding changer complexities, just go to the Dual heading at Vinyl Engine and look at repair procedures for any of the older models.  A friend offered his 1229 he no longer used but a review of the restoration quickly eliminated that kind offer.

At my age, I need all of the exercise that I can get, so a manual table fits perfectly.