Temporary objects are often created and destroyed through the normal course of a program, without much thought. That’s not entirely true, when writing efficient code, we do try to avoid temporaries when possible. Especially when they involved non trivial constructors and destructors. What I’m referring to when I saw we don’t give much thought to temporaries, is about the lifetime of temporaries (when temporaries can’t be avoided of course). When it comes to most temporaries, they are usually limited to the expression in which they are used. However, there are cases in which the lifetime is extended, some for obvious reasons and some more obscure.
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