A professional photographer doesn't just "catch moments". A professional photographer sees the moment and then crafts it by creatively using the camera perspective, unique lighting, decisive framing, and so on. The professional, trained photographer refines the emotional palette of a photograph, so that it holds the eye of the viewer, and forms an indelible memory to be treasured for generations to come.
If I buy canvas, brushes, palette and oil paints, I have the "tools of the trade" to be an artist. But just having those tools does not make me an artist...only proper training, practice and years of experience do.