We don't live forever. For some, their work can survive and influence future generations for centuries (Da Vinci, Shakespeare, Bach), but not the person - they all died, as will we.
The older I get, the more I value time spent with my friends and family for I know one day, all relationships end. It's just a fact of life. I've been very fortunate to have had the life I've had. I don't take it for granted.