I don't see how it would ruin it, considering that you're the one who is purchasing it. Therefore if you don't get what you want out of it's nobody's fault but your own. And you kinda gamble in a way every time you unbox a crate considering the odds of getting something good is slim if you don't have good items.

I could go into more detail on the subject but the bottom line is it's just an advanced form of gambling