I agree. I also have serious concerns about keeping my data private. I don't want anyone to be able to access my data. But, having said that, there are a bunch of government databases that are unconnected and it'd be great if I could give them permission to talk to each other; that'd mean I could do a bunch of stuff (report changes in my circumstances to 6 different benefit providers and the tax people) with just one phone call instead of the 11 calls it takes now.
Maybe what's really needed is a better encryption / permission model?