Another option, if you already have terminal open, is to drag the file/folder from Finder into your terminal window. The path will be pasted there.
Like is the mac UI really supposed to be "Get frustrated, google it, and read how to do these things and special keyboard shortcuts/drag-and-drop/etc"?
To be clear I think macs are by far the superior product on the hardware front, but nobody should be discovering new UI tricks after 3 years, let alone a decade.