I had to go to ground once as I brought my 72" webbing and I swear, I couldn't find a tree slim enough to wrap around. I was gutted. Just having hiked about 18 miles I was tired and now, grumpy as all hell.
I ended up using my Blackbird as a makeshift bivy - worst night's sleep ever.
I always take my 96" (x 1") webbing everywhere I go. Unless I'm backpacking a trail I've done before.