Buying a new road bike very soon and I am conflicted on the whole disc brake thing. I love disc brakes on my MTN bikes, but I have never felt like I needed them on my road bike. However I am MTN biker first and road biker second. I usually get a new MTN bike every two to three seasons but my road bike will last much longer than that. Probably 5 to 8 years easily. If I plan on keeping this bike that long would I be making a mistake not getting disc brakes?