Because also, how can you gage if they are any MORE 'genuine' than any other marriage? Plenty of homogenous marriages happen for the wrong reasosn - thus the present divorce rate. That's why I think a politicized exploration of these relationships is foolish - statistics don't investigate the nuances behind them.
I wonder HoChi ducked this thread... he's usually pretty engaging about topics like this. He's good in a debate... a shame.