Just use a crack, I'm pretty sure 10 years down the road one will be available. I can't think of any games that stayed uncracked that long.The only reason it bothers me is because it's a iffy sort of process. What if I decide 10 years down the road that I want to install Bioshock again, but the validation/company is long gone? Wouldn't my game be essentially useless?
That's the only part that bothers me.