Oh, OK then, let's remove everything from the internet which might degrade the experience for someone out there (got to be even handed about it after all).
So, no more porn. Good start.
Better get rid of all those online forums, after all anyone can post anything there and I've seen some nasty exchanges and moderator favoritism which really annoyed me (and "degraded my web experience"). Buh bye, Mumsnet, and every other forum including this one.
People get pretty riled up about politics, so best remove all political opinion from the internet just to be safe. Official party political websites? Gone. 90% of Rupert Murdoch's content? Trash-canned. Wow, the web's starting to look pretty pleasant now.
Anything to do with religion? Delete.
News is so depressing. Let's get shot of it.
Hm...my neighbor, a die-hard Chevrolet guy, has one of those "Calvin peeing on a Ford logo" things on the back window of his Silverado. Better get rid of Ford's corporate site in case those Chevy guys get all bent over it. Of course the Ford fanbois will want Chevy taken down too, so it must be so. Since we're on this track now, there's a lot of product fanboi rage out there. To dissipate it we must purge the sources, right? A swift rm -rf apple.com microsoft.com *linux* nikon.* canon.* coca-cola.com pepsi.com tesco.co.uk sainsburys.co.uk ..... (continues for some time) and the web will be just dandy! Yeah!
Let's not forget college and school rivalries. Purge their web presences!! Sports teams? Wow, get rid of THAT lot immediately, people get violent over their ball-games so those must be bad!
I could go on, until the web was empty. This pathway is gated by misguided good intent, paved with unintended consequences and your guide is a government which is just mad keen to control and monitor as much as it can. If you really give a damn about your kids you'll do everything you can to STOP government from meddling any more than it has to, surely?
"As a parent" why are you so insistent that society take up the challenge of parenting for you? Shouldn't YOU be doing that? The best parents I know are the ones who take time with their kids and teach them how to cope in this messed-up world which the internet is just a reflection of. The absolute worst parents I've encountered are those who take no time to be with their kids, try to protect their kids from everything, fail to train them for coping with the world at large, then try to make that world conform to what their inadequately parented children are equipped to deal with.
And "as a web designer" you should just plain know better than to think technology is the answer. Responsible parenting is the answer.