If a company is serving good, simple ads, if they don't take up an inordinate amount of space, slow my computer, waste massive amounts of bandwidth, and overall ruin my web browsing experience, I'm fine with it.
But no one is. So I adblock.
If the end result of adblock is that websites stop being slow, user-hostile blobs of ads and third-party analytics, then I'd consider that an overall win. If the result is that websites start relying on reasonable subscription or access fees and that people become willing to pay that, then even better.
Potential losses from drive-by-download or other malicious content served by an ad-network: -$30000.00
Some people might produce some gems as a hobby but much of that is also crap.
Dude, where do you think their salaries come from?
>If advertising disappeared, there'd be a lot less crap on the internet.
Also Google wouldn't exist...