Friday's Question

I've been thinking about a quote from Piper's Let the Nations be Glad!, which say, "Missions exists because worship doesn't." I think he's right. If everyone everywhere was a worshiper of Jesus Christ, there would be no need for missions. That's why, as he says, worship lasts forever, but missions doesn't. So my question for today is, "In what ways should we be involved in missions?" I'm thinking more of those who do not give their life to the mission field (though I pray many more of us will). In particularly, in what ways should us Westerners be involved in missions?