The worst parts about chronic illness and getting older.
Knowing that time is running out far quicker than you'd ever anticipated. That you'll never experience the world and everything it contains in a way that leaves you satiated. You'll never get to love the way you'd always imagined it. You'll never see everything you've always wanted. You'll never relive the firsts of your youth... You'll never get to right your worst mistakes... The realization that your one time on this planet was squandered.