Arranged marriages, in nearly all aspects, emphasize communal values in place of individual wants and as such marital disharmony is worked around (or pushed under the carpet) for the sake of the group. And individual satisfaction is hardly desired by the group.
However as young people increasingly become independent, and (ironically) continue to emulate Western values, they develop little tolerance for such compromise and will readily opt for separation if necessary .. to the point that Indian divorce statistics may well come to resemble that of the US.
All the while hardly anyone questions marriage/love itself.