Mastering C++: A Comprehensive Quiz Based on 'Thinking in C++

Multiple inheritance should only be used as a last resort when there are no other alternatives available. This is because multiple inheritance can lead to complex and hard to maintain code. It is not advised to use it as a first solution as there are likely better design options available. It should also not be used frequently as it can complicate the codebase and make it harder to understand for other developers. Overall, it should only be used when absolutely necessary and all other options have been exhausted.