"...neither of us has had yeast infections"

Just for clarity, I assume you are not including yeast infection in with STI's??? I certainly hope not in any case.

Yeast infections (Candida albicans for instance) *can* be transmitted sexually, but the vast majority of yeast infections happen to women and for various reasons. Vaginal yeast infection is not the only form of 'thrush'.Three in four women will experience at least one yeast infection in their life and many will have several infections in their lifetime. Babies can get Thrush as do the elderly. Mne get what I think is called "jock itch". Women are more prone due to estrogen effects but antibiotics, pregnancy, obesity, PMS, multiple sclerosis, using condoms and diabetes can all exacerbate it. Obviously some of those things also affect males. This list is not exhaustive and there are lots of factors that make yeast infection more prevalent in some than others.

Indeed we all carry Candida albicans in various orifices and in the intestine.

It is NOT an STI

Sorry to be pedantic on that point but it is important to kill any idea that it is an STI before it gets into the thread. In short, never having had a yeast infection just makes you one of the lucky ones, but there is no moral high ground that goes with the status. Yeast infections can heppen to anyone for all sorts of reasons and seldom is it down to sex per se. Virgins can get yeast infections and do!

mp