Don't be a dumbass surfer and none of that stuff will bother you.
The only thing that does bother me is the email spam, but I've done a pretty good job in keeping it to a minimum.
I only download from trusted sources, I don't surf for "porn" from google because I don't need to, and if you were an adult webmaster, you wouldn't either (isn't that what this site is for?)
I have a google tool bar (that I lurve so much!
)
I use AVG virus protection and it works like a charm, and I didn't have to pay for it or download the "cracked" version because it is already free!
And I haven't wanted to search with sound since the first AOLer designed her first teddybear-rainbow-country rose-midi-crap-website.
I highly doubt it will ruin the internet, it's survival of the fittest - those who go crazy from it can leave, and I thank them for it.