This might explain the lack of success.

Doubtful. My romantic excitement, as best as I can tell, follows a positive selection process and it is highly inconvenient. (Basically, my dating history looks like I sat down at 16, compiled a list of people who fit a particular description, sorted them along that axis, and then have tried to date them.) Like Viliam_Bur points out, you don't want to have 900 criteria which can disqualify someone- but you do want to have a reasonable number of thresholds that you don't go below. At some point, the amount you dislike the other person will be determined by their lowest stat that you care about, and it would be nice to not have to deal with a lot of dislike.