Also, as far as I'm concerned the whole "you don't own (insert steam game) steam does" argument is silly, that is no more true than if you buy stuff on iTunes, Ebooks from Kobo or Kindle, iPhone apps etc, its a silly argument. Of course you own your game, you bought it and it is completely yours to alter and store on your computer. The day when entire video games are streamed you may have a case but really until then it just seems like people who don't like things that are different.
Well, no. Try to install the game and play it without the game having been registered with Steam, it's impossible without a crack. So in actuality Valve determines whether or not you may install/play the game, not you. And if Steam ever drops support for your game for whatever reason, or perhaps if Valve gets taken over, then you may only hope for a patch that will nullify the on-line registration requirement because even the Steam EULA says they may drop support at any time. So in actuality you have no control whats however over a game that's supposedly "yours".
If I want a Steam game, I'll buy it on Steam. When I buy a retail game I really have no need nor desire for Steam at all
For me Steam adds absolutely nothing useful to retail games. Even the built-in update function is utterly useless to me, since it'll only ever want to update to the latest patch (which is not always beneficial, especially considering mods), and since Steam simply refuses to remember that I put automatic updates to "do not automatically update this game" whenever I re-start Steam.
I don't care enough about it to not buy a Steamified retail game, but I'd much prefer it to just be gone.