The best reason to learn C/C++ these days is just in case you need to write a wrapper or glue code to some library wirtten in C/C++ so that you can interface with it from your language of choice.
Of course, if you plan on trying to get into the business and want to work on AAA titles, learning C and C++ is still a necessity unless you want to be relegated to scripting.
Of course, if you plan on trying to get into the business and want to work on AAA titles, learning C and C++ is still a necessity unless you want to be relegated to scripting.