Because it's nicer than an MTB on the tarmac sections which lead to the gravel paths. Get a FXE if you fancy one, but a Pompino will do everything a FXE does and has room for tyres which let you take any path which takes your fancy, and the frame is only a pound heavier. I have a pure road fixed bike and an MTB, but the Pompetamine gets taken out more than both combined because the marginal loss of speed compared with a proper road bike is easily offset by taking a short cut across the fields, and the marginal loss of off road attack compared with a proper MTB is easily offset by being much faster on the smooth bits, tarmac or prepared bike paths.
Because it's nicer than an MTB on the tarmac sections which lead to the gravel paths. Get a FXE if you fancy one, but a Pompino will do everything a FXE does and has room for tyres which let you take any path which takes your fancy, and the frame is only a pound heavier. I have a pure road fixed bike and an MTB, but the Pompetamine gets taken out more than both combined because the marginal loss of speed compared with a proper road bike is easily offset by taking a short cut across the fields, and the marginal loss of off road attack compared with a proper MTB is easily offset by being much faster on the smooth bits, tarmac or prepared bike paths.