‘See you soon!’ is probably the most hopeful and cordial way to say good-bye. It can please us implying that we would meet that person again. It can make us sad if we know it is unlikely that our paths cross another time. It can leave us indifferent as a simple expression of courtesy. Or it can be anything in-between.
Good-bye words might or might not matter, but farewells definitely do. Finding out if and how to deal with them beyond a mere ‘see you soon!’ statement is a true journey of discovery. Not easy, but necessary.