Having both money and love is ideal, but in the (unlikely) situation that one cannot have both, more people will pick financial security over love. After all, there are plenty of fish in the sea, but there may not be countless opportunities to financially succeed. In the words of John Kander, "Money makes the world go round." In today's world, it is not possible to survive when one is absolutely broke.
People say there's no point in pursuing love if you are penniless and cannot afford to take care of your loved one. Studies have shown that more people have chosen paths that offers them financial potential (i.e. moving across the country to work) than the people choosing their significant others over job offers. For example, it is known that women who earn higher education degrees are far more likelier to be unmarried (and childless) by their mid-30's. The main explanation for this is the inflexibility of most firms and occupations. Once out of grad school a woman would be on her way working up the ladder at her workplace. In addition to the fact that there is a hike in average working hours of American professionals in the past few decades, most of these women would not have the time whatsoever to date much less think about marriage and kids.
When I put it that way, it may seem that some people have no choice but to make money to survive. That may be true in some situations, but in other situations, money gives people utils (an economic unit that measures one's happiness) to the point that one would characterize that as greed. In both the media and real life, we've seen couples divorce over money issues and family members attacking each other over their inheritance shares.
Of course, there are always a few souls that choose to stay with their significant others and carry the financial burdens, so pray you'll run into one of them in the future.
DISCLAIMER: this article does not apply to jobless kids/adults in committed relationships, as money is not in the relationship equation (yet).
