You may have a point.
It's a bit like policing isn't it.
Us "honest" citizens like to see the Police around our neighborhoods, it gives us a good safe feeling. And when something nasty happens, we call on the Police to help us. There are hundreds of thousands of Police officers around the world who make a living carrying out their duties..
But still, wouldn't it be nice if there was no need for Police?
Look at it this way:
Whilst nearly everyone in the "West" no longer has a clue about obtaining food, water, shelter, clothing and other fundamental needs at first hand, i.e. we all rely on someone else to do all that, a whole new "information economy" has grown, with more than sufficient problems to keep people busy and pre-occupied, e.g. not bored, and it revolves aroung computers and the internet.
For example: if this hadn't all arisen, then those of a devious mind-set would not have invented Trojans, Malware, diallers, tracking cookies, virusses and so on .... in which case there would not be industries dedicated to combatting such renegades (even criminals).
In short: wrong-doers are VERY necessary to generating cash-flow and employment ... even if none of it produces the the very essentials of life.
"Isn't it ironic, don't you think?"