If I were still racing, there would be disc brakes on my bikes as that is what the sponsor provides. Outside of racing? No. Does not solve a problem for me as I don't have stopping issues with rim brakes. My last mountain bike had disc brakes and they were very effective, however they didn't make me any faster than the rim brake model it replaced, and I didn't hit fewer trees with them either. Simply put, disc brakes do not fix something that ain't broke.