I find it sometimes tedious to wade through all the biblical excerpts and "if one is to" phrasings to figure out what you're trying to say. So what is the point of your last post? Are you saying that a good Christian should not enjoy life's adventures but instead live life as if today or tomorrow isn't of the same value as the everafter? I say live for BOTH and you'll be rewarded twice.
Jesus was on a mission and I don't believe that he was expecting that each and every Christian was supposed to live their lives as he did. It's certainly noble and generous of those who do, but I don't think that is what Jesus was asking of all Christians. Belief in God, meaningful observance, and making some sacrifices for the good of humanity, but not to devote your whole life to biblical studies and prayer and worship. That's what monks are for.
The rest of Christiandome would do well to cherish and enjoy the earth, its people, and its wonders TODAY. I think that if more people did that, then the world would be a better place.
Re: Worry