Me also, I have used Rhino since early days and use it in special way, something between hobbyist and professional, (remembering Rh forum projects and scripts posted from David Rutten when he was Delft student, helping script sent by Pascal for my thesis, Kangaroo physics for my cattenary geometry for the bridge project …and so on) Because I am getting old, and my professional work is not very technologically connected with new technologies for production i like this tree years rhythm (and for sure I will upgrade for 6)