Sigmund Freud once cited the inquiry, “What does a woman want?” as the universe’s greatest unanswered question. The media and the world of psychology are both abuzz with optimism this week at the possibility that such a question might have been answered in a new book called Why Women Have Sex.

As it turns out, psychologists and authors Cindy Meston and David Buss have concluded that (surprise!) women have sex for a vast multitude of very complex reasons. Sorry, Freud. That probably wasn’t the epiphany you were hoping for.

Meston and Buss interviewed about 1,000 women over the course of three years, asking them whether they’d had sex for any of 237 reasons they’d compiled from the results of a previous study. They found that women are all over the board when they decide whom they want to bed and why: Sometimes it’s for love, other times for money, out of pity, pleasure or to make another partner jealous. There is no right or wrong answer, and love is certainly not where the buck stops.

The results are wildly inconclusive but fascinating nonetheless. It seems women take a greater number of factors into account when choosing sexual partners and are thus pickier than their male counterparts. Sexual arousal is far more complicated for women than it is for men, Meston and Buss found, and sexual experience is more closely linked to self-esteem. Most of the reasons behind choosing to have sex are rooted in evolutionary foundations.

One notable theme that emerged from the study was that of a sense of duty; most women said they often have sex because it’s simply easier than denying their partners. Boredom, bargaining and the comfort of maintaining a routine are all factors that contribute to such a sense of duty.

“One woman even admitted to having sex just so her husband would put the rubbish out,” a Daily Mail article explained.