Everynowhere (Swiss)
I don't think arranged marriages have any advantages - at least not in the long term.
However, I do think it is important to have a harmonious family life - and therefore, it is crucial that all family members are tolerant and support each other. So if my child brought back someone I didn’t like at the beginning, I'd try to understand what is fascinating him or her about this person rather than trying to part them. If my child's significant someone is really such a dork, they'll break up sooner or later anyway.