Its more than paranoia, its a clever marketing ploy to make us think that all germs are bad, when they aren't. Obviously medical and nursing staff in hospitals need this kind of thing because of the danger of cross-infection in open wounds, but definitely NOT in the home. Children build a natural immunity to germs by handling them. Products like this are more likely to make children, especially, sick.
And just to add to my own reply, there are more good germs than there are bad. It would make far more sense bottling the good germs and spreading them around on hospital floors and suchlike instead of using germ killing products. The good germs eat the bad germs and left to nature, our hospitals would not now be filled with MRSA and all the other really dangerous bugs that are killing in-patients day in, day out.
I suppose it's a brilliant enginerring idea but it begs the question Why Bother ? And if you do and your house is going to follow the sun wouldn't it a good idea to fit solar pannels to power the supid thing ?
Well, since I wash my hands directly after pressing the top of the dispenser, I really don't see what harm pressing it can do - I only need to press it once before washing.
There was an advert here in Germany where a housewife uses anti-bacterial wipes on the mouthpiece of a telephone receiver directly after her husband has made a call. Sometimes the ads are more entertaining that the programs.