What "imminent" event should be a motivating factor in Gospel proclamation?

I keep hearing this term "the imminent return." I find it somewhat disturbing and somewhat arrogant. Those who use the term usually imply that they know Jesus' return is right around the corner despite the fact that every generation since Jesus' incarnation here on earth has believed that the his coming was right around the corner. Every generation has interpreted events of the generation as if they were fulfilling Jesus' prophecy concerning the end of days.

There seems to be a trend developing in the Church today. Along with more and more people believing that the rapture is to happen before the Tribulation there is an awful assumption being made. "If you don't accept or believe in the imminent return of Jesus you can't fully develop the sense of urgency that is needed to proclaim the Good News!" Really?! You mean to tell me that every person who believes in the imminent return of Jesus right now (which seems to be the majority of American Christians today) is out there evangelizing? Statistics concerning the growth of Christianity  in America would disagree.

Many people use the Christianese term "imminent return" as if this is the only real motivating factor for a Christian to urgently proclaim the Good News. However, consider this. There is another imminent event that every Christian should be completely aware of, and this event should also be a motivating factor in the urgency of Gospel proclamation. It is the imminent ending of one's time here on planet earth! No one knows how long they have, nor do they know the hour of their departure. James said "What is your life? For you are a mist that appears for a little time and then vanishes." (James 4:14)

Christians should not be looking down on brothers and sisters who may not subscribe to the "imminent return of Jesus" ideology (pre-tribulation rapture theory) that is present today. There are other motivating factors for Gospel proclamation. Christian brothers and sisters should encourage one another to give Gospel proclamation priority and see it as an urgent matter because our days here on earth are short, and we should be making the most of what we have been given. This concept in Christianity is known as good stewardship.

Things like when the rapture should happen should never be a dividing issue especially when all Christians should be motivated by the same thing when it comes to proclaiming the Gospel. The major contributing factor to the urgency of Gospel proclamation is not even the fact of our own imminent demise. The greatest motivating factor in Gospel proclamation should be one's love for and obedience to God.