I have been asking myself the same question about creams since I practically never use them anymore except to make superlather. I like soaps because them seem to give me a denser lather because if I am not happy with the density I can always go back to the puck and load some more. Soaps are more compact and thus take up less space which is good when you are traveling. When traveling by air, you do not need to put the soap in a particular container, you just dump it in your luggage. The use of the shave stick does not require any bowl or such for lathering, you just apply liberally on the face and then start lathering directly on the face.