I dont think it's a dumb question at all. I too, wonder if I should install a floor shifter. I installed a 700R4 last year and kept the column shifter. It works, and I can select all the gears, but it's just not as "Race Car" as a floor shifter. There are other obvious reasons for a floor shifter, manual valve body, better selection of gears for racing, etc. But for a daily driver that goes to the track 3 times a year, I feel that a column shift is fine.
It's all in what you need, and what your expectations are.