You're Retired - Now What?
How are you going to spend your time? For decades, you've spent the lion's share of your waking hours at work. In an instant (more or less), that enormous time commitment will evaporate. How will you fill your days? Is it the golf course? Tennis? Volunteer work? Taking care of your grandchildren? Again, the vision you have for your retirement is an individual one, not one to be criticized.
Nonetheless, be it your friends, health, geography, or hobbies, it is far better for you to plan these key non-financial considerations with at least as much emphasis as you have making sure you can afford to shelve the job. You want to be happy with what's left - a full and enticing retirement!