The Real Problem With Marrying For Money

It is said:

"Marry for money and you'll earn every penny."

Does anyone actually take heed of this warning in practice? If anything, if you marry for anything ELSE, you are considered by this culture to be an idiot.

More to the point:

It is also said that you can have a lot of fun in the bedroom with someone you dislike. I know my way around the bedroom well enough to admit that there is truth to this proposition (excuse the term). But can you have any such real fun with someone you neither like nor dislike, indeed, someone for whom you have no "feelings" except enough contempt to have married them for money?