Americans and vacation remains a massive train wreck

Here's what we know so far:

• 430 million vacation days are left on the table by U.S. residents each year.

• Everyone always claims they "can't" take a vacation because of "so much work" (the work will be there anyway)

• Seriously, how many excuses can Americans come up with on this topic?

Now we have this, with research from TripAdvisor:

77 percent of Americans …