why cloud computation?

Every body is talking about cloud-cloud and only cloud. Why don't researchers understand.
So much ease to human is injurious to health. Technology is making  human lame.
Look at this technology.. now u don't need to bother even... where should we keep our data..
where to invest while purchasing software. Take the software on rent, use it, and forget it.
Just like renting movie DVD.
why to bother.. how much hard disk will be sufficient while purchasing a computer, store on cloud.
No need to worry against antivirus... as no need to update its virus definition.. all services will be provided by the hosting operating system.
Now days old idiot box, television becoming smarter and computers are going brainless.
In cloud computation you don't need a RAM, as all computation will be done on cloud only.
But why should we trust others while saving our sensitive data, better to make your own cloud..
then comes... private cloud. So, you have solution of your problem... means.. the days are not far behind...
when u will have nothing to do.. machines will do..even thinking and dreaming for you.