Rule of zero classes are awesome. It forces a separation of concerns too, generally a good thing :), as the handling of special things is done by a class that does that(e.g. unique_ptr, vector...) and your class describes only what is in it and how to interact with it. But no more detailed than that.
Totally agree. Recently used unique_ptr with a custom deleter is to consume a C library that requires heap allocation with its own alloc/free functions. No destructor!
I have a class, boringly called value_ptr, that is like unique ptr but if the underlying value supports copy will do a copy constructor and assignment too. Then I don’t have to make one is the classes like this too where I am using a ptr for other reasons. It also has const correctness