Never had a fitting for a bike. I've always tried one I was thinking of buying. I did have the stem changed to a shorter than stock when I bought my road bike. Could tell after just a few blocks that the stock one had me a little to stretched out. Haven't felt the need to change it since. I'm an occasional, "recreational" rider, maybe if I was riding every day and for longer distances, a bike fit might be beneficial. I've been ok just trying before buying so far.