There's also the aspect that in arranged marriage societies, the purpose and expectations of marriage are different. There, marriage may be an institution for the creation of a stable family for children. If Western love happens between the married couple, then so much the better (this type of love may be catered for by the married people having affairs). But don't presume that marriage has a universal 'love' basis. It can be more like forming a partnership to build a business. Imagine someone from another culture telling you that your startup was a sham because you didn't love your cofounder(s).