The reasons to go big when it comes to wheel size are well accepted these days: more momentum, more stability, more traction. The real question is why a Fisher 29er? Because Gary's built more 29ers than anyone on earth, and all that experience has been refined into the current line of Fisher 29ers that amplify all the benefits of bigger wheels while making light of any drawbacks.
Gary's proprietary G2 Geometry with custom offset forks improves slow speed handling across the whole line. Combine that with our Superfly, the lightest Fisher hardtail ever, and the HiFi full suspension in a 29" platform, and once again Gary has changed the question from why a Fisher to which one?