I don't think using/not using spin early on is a one-size-fits-all matter. In my first year of playing pool seriously (that'd be last year), I reached a point where I decided to ditch spin almost completely, and went back to center ball almost exclusively. I had gotten my stroke down well enough, my aiming, etc..., but once I started incorporating more and more spin, that all fell apart. Like, really bad. That's not going to be the case for everyone, but it was for me. After about a month of building my foundation back up well enough, and my confidence, I started going back to spinning it.