Whatever happened to marrying a guy just because you love the guy???
Historically, marriage was never intended to be for "love".
Marriage has always been an economic arrangement designed to ensure that men had the needed access to a uterus and the women had access to economic stability, status and help providing for children. For most of history, marriage partners were arranged based on family needs, not on the mushy feelings of the participants.
Reproduction is important. Without it our species doesn't survive. Love is nice, but it isn't essential.
I don't see any problem with this.