They always flush before you're ready for them to.
sigh
I don't like them because I turn around and take a moment to ponder how I'm assimilating my food. Sinking? Lots of bubbles? Is fiber doing its job? I'm not picking it up and checking, but I look. You can tell a lot about general health by looking...
... I feel a little bit bad about myself now having admitted that... then again, you've gotta look! So, PSA...
I also look and dislike auto-flush for that reason. I almost bled out twice in my 20's. Since they had no idea why after the first time, I was diligent and caught the second time sooner but still... The first time I was in Juneau, AK. The second time I was in Vancouver, BC which is why I'm still alive.
I used to travel extensively for work and most airports and lots of businesses have autoflush. I lost my first Blackberry in the Chicago (ORD) airport - I banged the holster on the stall door and it executed a perfect dive into the bowl and Autoflushed to oblivion.
I like them so I don't have to touch anything, but yeah.. the flushing too soon is annoying. Lil creepy with a urinal cause a lot seem to flush while you're still standing there and finish pissing, like they somehow know.
Not as much as I hate unflushed toilets in public restrooms!!!!!!!!
Never thought about it but on reflection they probably are a bit spooky!