What is a 'decent' guy? I'm single and consistently see women as clients who somehow get into a relationship with guys who are absolute dropkicks, physically and psychologically abusive control freaks. There are heaps of decent guys out there though, nz girls seem to just sometimes go for dropkicks. I think that at the moment, some men in nz may be unsure of their actual 'worth' or 'value' to some women, when a minority seem to ruin it for them, and women are ultimately confused about what they want - even if they do have a 20 point check list which they use to filter potential dates (via internet dating for example).
Because a minority of men ruin it for other men, some of the decent girls also have impenetrable defences up, and are not so comfortable in themselves to just be themselves and take things as they come.