Why do humans personify everything ?

To make it easier for classification and stuff like that.(biology)
another thing is, personalify things allow things easier to be distributed, say dvds, cd-roms, stuff like that.
we need people to become specialized in something, say someone specializes in pharmacy while the others specializes in retailing like a supermarket, to allow better services to be distributed. Different people specializes in different things, so we can make the exchange later on.
If things are not personified, there would be no one to provide the services. we need ppl to provide online services, retailing services, otherwise, how else can we buy stuffs? so these services are important, provided by different people, and they must be personalified if we were to exchange these stuffs in the market.