The point is that it INCREASES the chances of HIV transmission. Nor does it prevent pregnancy, in my experience, unless, again, you are infertile to begin with or your male partner is infertile to begin with, but if somebody is infertile to begin with, it is both a waste of money to buy spermicide and a risk factor for HIV transmission.

If something INCREASES the chances of HIV transmission, it should not be on supermarket shelves - this is not a caveat emptor situation.