Part of the reason is that people want to breed, often people are greedy and want more females than males, often they don't realise that this can be a big mistake (I've missed out on breeding things because the only male I had wasn't interested). Often people buy females because they want to breed, apparently not realising they also need a male. There's more to it though, people who don't want to breed usually want females (people in this category buying from me probably want females about 80% of the time, 20% they don't care) this I only partly understand. If you look at what men want to look at (look at advertising, magazines, etc etc aimed at men), it's all sexy women. Okay, that makes sense, but if you look at what women want to look at (look at advertising, magazines, etc aimed at girls and women), it's the same; good looking women. Of course, these are those of us who would prefer to see advertising consist of a list of facts about the product and only read magazines with pictures of reptiles or insects on the cover, but for some reason, they're the exception. Usually this is because men know what they want to look at and women want to be able to look like that, which perhaps explains everyone's fascination with female humans, and this 'preference' for females perhaps translates into animals too, which would explain it. Very strange species we belong to!