C++ has portability issue (where portability does not mean supporting g++ and MSVC), poor interoperability, and is much harder to maintain in a distributed team

C++ has portability issue (where portability does not mean supporting g++ and MSVC), poor interoperability, and is much harder to maintain in a distributed team of people with varying ability in the language (e.g. open source). When those are not issues, C++ is appropriate. Otherwise, it is a pain.