Sunk Cost of Adventure and Having a Backup Plan for Hiking, Climbing and Mountaineering
Avalanche accident studies have shown that the number one subjective hazard (hazards inside or our heads) that contribute to accidents is the desire to not "take a zero" on the day. Have gotten up too early, driven too far, etc. to bail on marginal conditions. Well, having a backup plan gets you out of that conundrum. You don't have to choose between all of the fun and none of the fun. Some of the fun can do in a pinch.