Joined: Jul 2011
Posts: 605
Likes: 11
From: Denver, CO
Bikes: 1966 Carlton, 197X MKM, 1983 Trek 620, 1988 Schwinn High Sierra, 1995 DBR Axis Ti, 1999 Waterford, 2016 DBR Release, 2017 Surly Travelers Check
Discs are nice in foul weather riding and on long mountain descents. But rim brakes work in either situation as well.
Not that it matters on a bike like a LHT but a disc setup will add a pound or two to the bike (heavier than rim brakes, plus sturdier frame build to support them).