I disagree. Just take a look at the housekeeper's carts - that will tell you the whole story. If the cart is stocked with clean glasses (ideally still in the plastic carriages that go through the dishwasher), then it's very likely that the housekeeper will swap out the used glasses and replace them with clean ones that went through a dishwasher, rather than clean them in the sink. Why? Not just because it's the right thing to do, and not just because it's hotel policy: it's the easiest thing for them to do. However, if the housekeeping carts have no stock of clean glasses, then watch out.

I guess I should've specified, but my question was about service in luxury hotels and resorts.

I have different expectations when staying at Hilton than at FS.

But it seems some posters are suggesting I shouldn't :p

It will clean to the required standards, I agree. It will not sterilise which is the statement I was responding to.

Sterilisation has strict criteria which must be met, and no hotel is going to even think about achieving these, not that a dishwasher could anyway.

This "unsterile scenario" is possibly the reason why seasoned travellers are so healthy and able to do their action packed/frequent flying jobs done. Thanks to the little bugs providing us with our immunity :)
Do you think that cafes etc all sterilise their cups etc? I doubt it really, but it's down to trust and get on with actual life really, surely?

Give your glasses a wash if you are not happy, seems simple.

And, yes, I'd expect housekeeping to change my cutlery.
And then I'd clean it.

The term is sanitize not sterilize. Commercial dishwashers and the chemicals they use will sanitize dishes, glasses and flatware. The hospital will sterilize your surgical instruments.

One doesn't require heat to sanitize, a bar sink has 3 sinks for sanitizinig glassware. The chemicals like most harmful organisms.

I have to admit - despite the hundreds of nights I have spent in hotels, this question has never occurred to me.

There's only "so much you can do" when you travel. There is also a continuum between "I don't care" to "A healthy dose of paranoia" to "I probably need a mental health evaluation."

If I use in-room utensils, glassware, etc., I simply rinse them in the sink under hot water for several minutes. That's my "so much you can do."

Sorry to be back to topic, but while staying at a "luxury" hotel in Rome, it was clear the glasses were simply wiped out each day. I use a lip moisturizer that leaves a clear mark on glasses and quickly noticed the smear on the glass after the room was cleaned. Now I wash the glasses in the bathroom before use every day.

It's also a question of what matters to you. I travel with my own unbreakable mug because I can't stand the taste of either somebody else's coffee residue or styrofoam. I bring the mug, I clean the mug: problem solved.