Greetings in that Divine and Most Precious Name of Our Lord and Savior Jesus Christ!
If someone was to get married properly and to love the person more than their own life and that they can't imagine a life without them in it hardly. To take that risk and to know that there is no marriage in heaven (as i just realised last night reading it!!!!!!) and all that love and risk is for nothing how can that be right???
You misunderstand, in Orthodox marriage is Divine Mystery/Sacrament. This means it is part of God's plan
for our Salvation, equally integrated with Baptism, Holy Communion, and even the Priesthood. While we may chose to cooperate
with the Mysteries, we do not outright chose them, rather God through the Spirit invites
us and brings us into them. We can not on our own chose to commune with the Divine Mysteries, it is truly a mystical invitation to which we can offer only what we are able, our acceptance. God makes the offers, we can accept or decline, but it is not we who strike up the bargain initially, it is God.
So with Marriage, in Orthodox we believe that God worked to bring about the Marriage, and its God we trust then. We humans are not perfect and neither are our relationships. We really have to then get out of this idea that we chose God, rather we should embrace that it is God who chooses us. Some folks are called then to be Priests, others are called to Marriage, and a few to Virginity, but there is a place in God's kingdom for all likes of people. We must pray to heed God's calling then and live in the Divine Mysteries. The Apostles said the same sentiments you are expressing when they said, "If thus is the case, why is it that people even get married?" But Jesus Christ replied that the celibacy they were inherently suggesting to counter marriage was not something human beings could maintain of their own will, rather He said, "Not all are containing this saying, but those to whom it has been given."
Be it marriage or celibacy then, it is God who gives it to us, and not of we ourselves..