Passport renewal

Now that passports are renewed every ten years, it made me think while traveling this week. My passport will renew again in 2020, seven more years. Without a passport it feels as though I am not a real person as I know I cannot travel outside the US, go the places I want to go and experience the world. But in looking at my passport it is further evidence of my mortality with cancer and the possibility that this may be my last passport since I amy not live long enough to renew it again, or be too sick to travel. I need to make it ten more months to see my son finish his first year of college. Beyond that I cannot plan or think until I see what condition I am in at that point. But 2020? Doubtful unless the sciences changes significantly in the next few years.