Re: Why bother
Yes - it has produced very worthwhile maps and street view and also google earth. It is by far the best search site for most searches. YouTube is also very useful as a background music application as well as a source number of original videos (eg the videos on lock picking by bosnianbill).
I agree that it enables a lot of advertising (NoScript and AdBlockPlus tames this fairly well) but it does at least give some value for its advertising.