The other side of that coin is, if we all read the bullshit extended legalise in every licence/privacy agreement for everything we've ever used, we'd never do anything else but read them.
Besides which, it's not like there's a choice aside from accepting the agreement or not using the thing. Alternatives? All have similar agreements attached.
Basically, this is just a symptom of how much "better" modern life is. But hey, at least we don't need to worry about lions eating us quite so much.