It allows for repeatable, ďprogrammableĒ type cuts. Having a fence that moves in exacting 1/32 increments allows projects you canít do with a standard fence that you have to bump to fine tune.
Business card holders
Whistles that I made to give to the youngest generation at family reunion in an attempt to drive their parents nuts
A trivet that had I think, 56 fence changes that needed to be repeatable. I know it would be easy to make something like this using cnc, but I dare you to try it on another router table.
The advantages of the Incra fence are for joinery and small craft type projects. If you think a router fence is just useful for edge profiling or routing rabbits, dados and grooves then your right, you can do everything you want using your fence to do, but if you want to open yourself up to entirely new ways to use a router table, then an Incra fence will allow you to do things you never consider possible.
It isnít just the front-to-back movements that offer 1/32 adjustments. The fence offers 1/32 left-to-right adjustment of stops for precise stopped dados and grooves. The superfence add-on also allows for routing tall items safely and precisely.
In woodworking there is always more then one way to accomplish something.