Re my earlier post about automatic toilets: I could be wrong, but it seems to me that in bathrooms with manual flush toilets, there are more unflushed toilets than there used to be. (I'm not talking about deliberately clogged ones.)
My guess: people have gotten used to automatic toilets doing their flushing for them, even though it doesn't always work. They've started to assume that all toilets are automatic, without checking. They no longer view flushing as their responsibility.
Again, an example and a symbol of larger trends.