Be truthful: Marry for LOVE or BAH?

As a Chaplain seeing Soldiers and prospective spouses in my office, I ran across this issue more times than I'd like to admit. Even discovered a 'contract marriage ' racket run through Craigslist off-post. So I ask, do you marry for LOVE or is there a case where marrying for BAH is appropriate? Let me be clear. The reason I ask has to do with the brouhaha over gay marriage. Critics say it cheapens the sanctity of marriage. I was wondering if a heterosexual couple (or gay couple ) marrying to get BAH/BAQ or performing a contract marriage also cheapens the sanctity of marriage? Are there more than a few ways to cheapen the sanctity of marriage ?