Pauappallos thank you for sharing your thoughts. I agree with you that the Watchtower encourages a selfish attitude towad the future. I describe it as materialistic, being concerned with the physical things rather then spiritual . If I could just add one thought to supplement those you shared -
Here is a scripture about a future hope that is often read by Witnesses and shared in their door to door work -
And I saw a new heaven and a new earth; for the former heaven and the former earth had passed away, and the sea is no more. I saw also the holy city, New Jerusalem, coming down out of heaven from God and prepared as a bride adorned for her husband. With that I heard a loud voice from the throne say: “Look! The tent of God is with mankind, and he will reside with them, and they will be his peoples. And God himself will be with them. And he will wipe out every tear from their eyes, and death will be no more, neither will mourning nor outcry nor pain be anymore. The former things have passed away.” (Rev 21:1-4)
When a JW read this or shares this, what is the focus? It generally is the part about no more tears, pain or death. That's not a particularly bad thing to desire but I find it interesting that the part about God living with his people is continually overlooked. The focus is always on the material and not the spiritual. A typical JW has no real desire for such intimacy with God. They are content to live in a paradise earth with "the anointed" as their mediators before a distant God. It is a similar setup to what they have today except "the anointed" have moved.
Consider a typical JW presentation which begans with a publisher showing the householder a picture of "paradise earth" and saying, "wouldn't you like to live in a world like this?" [Allow for response] "What part of this appeals to you most?" The focus is on the material, having your own home, plenty of good food, and a pet lion. :-) If you believe in the Word of God, there are so many innumerable blessings that we can enjoy today through Him. JW's are told these things are not for them. They are taught to hope for the future but even then they are deprived of the things we are promised in the here and now.
They have no desire to be "anointed" and to have the spiritual things of God because they have been indoctrinated to long for the things in the material realm. Hence they equate their earthly lusts as having an "earthly hope". This causes them to reject the Bread of Life for perishable earthly bread - all encouraged by Watchtower leadership.