To quote Bjarne Stroustrup, "Multiple inheritance is like a parachute. Most of the time you don't need it, but when you do need it, you really need it." In the early days of C++, before templates ...

A controversial new proposal for .NET suggests the introduction of a limited form of multiple inheritance via abstract interfaces. This feature was inspired by Java’s default methods.

Panzercrisis asks:. I've always liked the idea of having multiple inheritance supported in a language. Most often though it's intentionally forgone, and the supposed "replacement" is interfaces.