Reemphasizing that I don't believe anybody should be forced into any sort of union against their will, I agree with the notion that arranged marriages may have certain advantages.
We do live in a society that champions freedom and happiness, but there are invariably aspects of society that we have a duty to uphold.
One of these while ethically difficult to enforce is the necessity of having and rearing children, the primary function of marriage, and mandatory for the survival of the human race.
If two people can get along, and suitably provide for one another, and respectably raise children, and this is something they both want, even in the absence of some romantic unquantifiable maybe even perceivedly spiritual or magical attraction called love, why should this not be encouraged?
I'm not really sure if the concept of marriage for love is a modern convention born of increased individual freedoms, or if it's been around forever, but maybe there is something to be said for a pragmatic perspective on having a family.
People can get caught up in the pursuit of some idea or understanding of passion that may only satisfactorily exist in fiction or in fleeting infatuation.
It's not uncommon for people to fall in love with or admire some idealized characterization of a real person, only to find disappointment or frustration in their real flaws.
Divorce may come easier nowadays in socially liberal societies, because people value their own individual happiness before their responsibilities to their community and family.
It's not entirely fair to characterize this as selfishness, but the general virtues of duty to family and community did not form arbitrarily and exist for the betterment of society as a whole.
Having both a mom and dad is largely necessary to the healthy development of children, as both social and moralistic role models, where many undervalue the importance of this or think the function of family is purely financial or infrastructural support.
Look at how crippled the African American community is by their excess of children born outside of wedlock and financial stability.
Arranged marriages offer the opportunity for structurally stable households to form in the absence of romantic interest.
If the people participating in it are fine with this, what is to object to?