Home life is measured in weeks and months, and when you ask somebody what's new, they'll say "not much" and maybe tell you what they did last weekend. Or the weekend before that.
Road life is measured in hours. I'll find myself telling somebody a story of this amazing thing that happened earlier on my trip, possibly in another country, and suddenly realize that it was only 3 days ago. A month of travelling compresses so much life into such a short span that it's really strange checking in with friends back in the world that can account for that same month with a single sentence.
There are times when life in the 'states can approximate that (the first weeks of a new startup for instance), but it's so easy to drop back into steady state where life is measured in calendar time.