I simply can't understand what you consider so "ridiculous" and why would you be "sickened" by it, since all that people are asking is to get a Steam key for a game that we already own. Its not like we will get two saved slots, or other things that would give us an advantage. We just get the benefits mentioned so far, like having the game in our Steam games library for real, not non-steam game, that is not the same in any way, getting the option to post a review, faster patch downloads, maybe Steam achievements in the future, these kind of things.
Many people already mentioned that if they knew that the game would be released on Steam, they would have waited.