well of course you can always remove or reinstall training wheels but fretlines are permanent .. I think of them more like the diagram on top of a gear stick, essential at first but once you get the hang of it then not so much, however its good to know that they are there to fall back on when required. I have heard some reasons to not want fretlines such as they put some people off or others like the look of a plain board, but I suspect some just like to flex in front of an audience. If you want that no fretlines experience then you can always turn off the lights, ..so far I never felt the urge. Fretlines look pretty much like frets to me and I'm very comfortable with that particular look.