The filter has already been shown to be faulty so who knows what it will block? It may be out of necessity that they get around the filter.
It's not just child pornography that is being blocked. It is a huge range of subjects. Who knows what Conroys brigade doesn't want us to see. It could be subjects that, even perhaps you, would consider benign and not necessary to be blocked.
If you want to be told what you can and can't lookup online, that's up to you. But if want to be able to view what I want, when I want. Just like if I want to go out and buy a KFC bucket of chicken with a gallon of mash potato and wash it down with 3 litres of Coca Cola. You may think "Oh, the filter is just stopping perverts looking at kiddy porn" But this is a much, much larger issue then that.