[oh the bad..., re: ] http://cryptome.org/2013/09/tor-analysis-hidden-services.pdf
Do you seriously think that reporters, aid workers, freedom fighters, investigators, whistleblowers, and simple chatfriends, etc are going to publish their onions for all to see, with all their data and logs and so on as some kind of stage show for you? The answere to that is no. They have better good and private things to do that do not concern you until it hits the AP wire.
So of course all you're goin to see on the public onions are a bunch of channers, criminals, crazy loons and a growing scattering of real projects and clearnet multihomes.
Unlike clearnet, any statistic over the onions you can see is simply not going to be representative of the whole of onionspace, quite a bit of which you cannot see.
You need to both understand and come to terms with that. Lest you too could not use anonymous systems when you needed them because some other thoughtless crybaby banned them and your ability to communicate freely and securely out from under you.
ps: please drop relays and take this tired subject to tor-talk.