Indeed!

this is really a dangerous situation if you look at future possibilities.
suppose someone starts creating virusses or malware on blockchains!
( and probably this is allready happening as I write this, mark my words!)

That would mean it will be impossible to get rid of them.

In fact it is allready possible to use ethereum as a coding platform to create socalled Dapps ( distributed apps ) that exist on a lot of ( distributed) places on the net, which means the apps cannot crash or dissapear: they will be allways here.

Sound a bit like a new lifeform....

Homo Sapiens will die, Homo Dapp will live forever!

As I type this I am constantly aware that everything I type here will exist on the blockchain forever, even long after we are all dead!

Maybe Homo Dapp will be able to delete the then outdated content that is no more of interest for.... Who?