Came home today -- bailed out at Muir Trail Ranch (MTR), so 10 days on the trail. One exited at day 4. We completed the northern half of the JMT.

Several reasons:

We were killing ourselves trying to do more than planned each day.
We carried too much food, which weighed us down.
We started longing for a shower and soft bed -- homesickness set in.
I got an intestinal bug.