"For to me to live is Christ, and to die is gain."
I've actually reflected on this verse many times in my life. How can dying be greater than living? Well, because of Christ. He has turned death into a thing of victory and joy, if we belong to Him. But life has its perks, too. We are placed here for a purpose. Bringing glory to God is the only way to have fulfillment. It's the only thing that satisfies. That's why he says that to live IS Christ. And, Christ IS life. There is not one without the other. But, Paul was honest when he said,
"I am hard pressed between the two. My desire is to depart and be with Christ, for that is far better. But to remain in the flesh is more necessary on your account."