How long do records last?

@faustuss I think owners of such turntables are likely to also be owners of one or more RCMs.

Many are extreme high-end and the users aren't going out of their minds worrying about record wear and increased noise! 

@faustuss That's true. For years I did the same. I always use a carbon fibre dust brush before playing an LP side and I suspect many others do too. But it is nice to cover the platter when not in use to minimize dust.

Certainly, but you know I was referring to playing the record without a cover.

@faustuss A decent air cleaning machine is a worthwhile addition to any room. It’s been covered (pun) in other threads and the consensus seems to be that turntables sound better with the lid (if fitted) removed when playing.