So the Jubilee too not only looks backward. It celebrates and thanks God for Catholic and Christian vitality today and points forward in hope to the rewards of heaven in the next life. We humans have to confront our fears. Our faith in Christ brings consolation, which develops into Christian hope, quite unlike the pessimism of some secularists centred on things such as nuclear war, ecological disaster and over-population. Eternal bliss is completely different and better from reincarnation where we start again and again and again, with no hope of escape, only improvement.
Life is difficult and complicated like mazes at some medieval cathedrals.
There is no Christian teaching that life must get better as we progress through history. It is impossible to transform the world. It is much better and closer to Christian teaching, to love those close to us and make what improvements we can. Nostalgia for a lost paradise or the impossible hope of rediscovering on earth a lost paradise is a dead end. They paid the price.