You're just starting from the assumption that the game will end up bad or you won't like it. Which is fucking stupid. It actually IS possible to enjoy a game, in which case preordering something that you know you'll buy anyway is just fine.
If I struggled to the end of my determination, to the end of my way of life with my followers, if the result is ruin, then this ruin is inevitable. Grieve. Shed tears. But you cannot regret.