Really? Circular? In what way?
All I am saying can be summed up quite simply: a relationship devoid of love is not truly a relationship but a business arrangement, and there is no love in a relationship devoid of mutual physical attraction. In a business arrangement that is attempting to simulate the relationship, if you offer either party the material things they are after but had to give up life with their "lover", they would choose that in a heartbeat and never look back. That train of logic breaks down for relationships with couples that are actually in love with each other and cannot fathom life living without their partner.
How is this so difficult for you to understand? There's nothing "circular" about it. At this point, there has to be some dissonance going on where you refuse to acknowledge the reality that is apparent to most people. That there is a fundamental difference between genuine relationships with couples who truly for each other on a deeper level, and business arrangements that boil down to some form of a barter.