recent surveys of sexually active women between the ages of 13 and 45 revealed that more than 40% enjoyed anal sex as much as, or more than vaginal sex. not only that, but a large majority of women within the same demographic prefer to use anal and oral sex as a sure form of birth control. another large percentage said that they find that they can climax while giving oral stimulation to their lovers.
please read up on things rather than taking your wife as being the rule, rather than the exception.
Reliable? I'm sure.
And even if they were, which they are not, last time I checked 40% does not make a majority.
Anal sex is for gay guys to enjoy as a majority. Possibly.