You know it's more than that, but at the time of this writing there are 77, 361 official signatures proclaiming each person's desire to see Rockstar's next Grand Theft Auto title release on PC.
And why shouldn't it? After all, as the petition to Rockstar to get GTA V on PC offers, the PC modding community is part of what made previous titles thrive and evolve even years after their respective releases. Because of some crazy modders, we got to see insanely cool creations in the heart of some GTA games. It would be a crime to deprive GTA V of that same opportunity.
It's not completely out of the question that we will see GTA V on PC. Rockstar's Dan Houser was last quoted indicating that a PC version is potentially "up for consideration", so hang tight for future (likely positive, is my guess) news.