On a fundamental problem solving level, open source spoils the part of the fun. I only need the executable file, and part of the fun is figuring out how it work

On a fundamental problem solving level, open source spoils the part of the fun. I only need the executable file, and part of the fun is figuring out how it works and how can I morph that file to make it do other things, or completely change the functioning of the software. One example I give is rock climbing. Logically, everyone should just take a helicopter to reach the top, or let the community contribute and build the road. But where is fun in that? We are rock climbers and we will rock climb.