Security Questions

I hate the sites that require you to insert the security question that must be chosen out of an enumeration. My problem with an enumeration is simple: most of the answers to these questions can be googled very easily (in my case they extremely easily if you are Russian speaking).
It's very easy to know what primary school I've attended, which city I currently live in (or was born) and what is my nickname.
Why is it such a difficult task to allow custom security questions? After all these questions intend to provide a security and not a security breach...