DaasYochid and Lior have pretty much said it all in terms of my planned response, but…
I specifically said earlier that this debate is about home usage for children, but immediately somebody replies by asking about me. If it helps, I’m not twelve, at least not the last time I checked. Whether it is right for an adult to regularly go online for nonbusiness purposes is another question, for another time (feel free to start another thread about it). Remember that here we are talking about children. And younger children cannot choose how they run their life, or moderate their usage or access. The parent essentially makes the choice for them. And when the life at risk is not your own, but another, vulnerable, one that is dependent on you to guide it and protect it, the entire issue becomes far more serious.
Next, not a single reply is made to mine, and others’, reference to the fact that Rabbonim have unequivocally ossured children having access to the internet, certainly on a regular basis. The only posts that even refer to them obliquely, appear to border on kefirah, and I do not say that lightly.
And lastly, as usual, most of the justifications for home internet are based on the premise that children must be educated on ‘the ways of the world’ or, through some rather twisted logic, that having online access would in some way protect them. Now, whilst I wish to be very careful to avoid insulting anybody (I have been warned that some of my posts have been too harsh), I personally find it hard to accept that this is the true reason one might wish to have it in the house. As I believe I have mentioned, I cannot see how the internet is absolutely necessary to educate children in these matters. My parents managed it, despite not having any home internet access (and, yes, it would have been useful in business terms). Children can be educated in a myriad ways without the web, and furthermore, if a parent does not feel they can inpart the correct values in their child without the aid of the internet, perhaps they should first look inward.