Bummer. I like having my games on Steam, but every time I see a deal on a GTA V pre-order, it's always Rockstar Social Club.
Yeah, I'm bummed I won't have the game on Steam, but I pre-ordered direct from Rockstar back in January because they had the best in-game deals.
It's the first game I pre-ordered in a long while (before that, actually, was the PS3 version! lol), because this game I actually expect will play well from the start. I'd rather not encourage the "must release by this date, bugs or no bugs" mentality, but based on how often this game has been delayed, I expect they have the correct priorities and will release a solid product.
All versions use the Social Club, so I wasn't terribly bothered by not having it on Steam, but still, I wish I could have Steam update the game. Not all of my games are on Steam or Origin, but I'd like to minimize how many are not.