I will disagree with Learning C/C++ will be childs play. They are hard, and further C and C++ is totally different languages and they are hard to learn especially at the level you are talking about these even get more harder.

And further using a language does not depend on developer but on your need, The little example i will give is You probably wouldn't cut birthday cake with an axe. Language is chosen on what you want to do. For example If I will use python where i need high performance will be disastrous.