Buddhists have it right

While teaching a Bible study this week on Philippians, I discovered that this Pauline letter contains a truth I had previously only seen while studying Buddhism. The four noble truths encourage, among other things, a detachment from life. The thought is that an attachment to this world brings suffering, so the less one is attached to transient things, the more likely one is to attain nirvana. Paul's attitude in the letter to the churches at Philippi seems to embrace the same idea of finding joy by holding loosely to this life. Writing from prison, Paul penned the words, "To live is Christ to die is gain" [Phil 1:21]. The glory of the eternal is just as real as the temporal for Paul, which allows him to embrace life or death. I would like to hear how individual Buddhists conceive of the transition beyond earthly attachment. What is the gain of nirvana?