The Problem With Organizing Legos

We came across a Lego inventory site where it allowed you to input the kits that you had. And then it would tell you, like, how much can you retail value of those kits? That's a lot of money in Legos right there. So, having this organizing service is like, well, could you build something new? We all these random bricks, you don't know what you can build. It's just kind of lying around and taking up space in the house.