Too Much is Never Enough
No matter how much information you have, you can always have more.
At some point, you have to make a call based on the information that you already have.
Sometimes, it is worth waiting for more, but other times more information won't make much of a difference.
Back in the nineties, Radio Shack was collecting so much information at the cash register for small purchases that they annoyed their customers. It is also unlikely that they ever used that information
The point is that you can have more information than you need.