I played the PS4 version, one of the best game I have ever played on any platform and I have been playing games for decades.
But the PC version release was botched. It's a mess, barely playable. I have a top of the line rig and for over one week now I have suffered constant crashes, stuttering, the game running my CPU at 100% but my GPU at 1%. I have never experienced such trouble with any game. Wait until they fix it before you buy it.
Update: They finally fixed the game (for my computer configuration anyways). I am still going to duck one star from the review because of the grief and loss time it caused me. So I go back to what I said above for the console version: This is an incredible game, one of the best I've ever played in decades of computer gaming. Cowboys may not be a thing for everybody, granted. The game is gorgeous visually, you will have plenty on WOW moments. There are tons of things to do, side quests of every type. Or you can just ride along doing your thing, whether that is exploring or robbing trains. The main story is fantastic. A few annoyances, you might accidentally commit crimes and get a bounty on your head, but that's AI driven and it's hard to get that right (similar to GTA 5) or bounty hunters may sometimes appear out of the blues, but that's nitpicking. Buy it when it's completely fixed.