As an RN, my standard answer is always that both parties should decide - even the cuckold husband since he will be effected.
That said, I have been in long term relationships with men, who were told that they had to be tested before I would go au natural with them. Once the testing was done all the way around, they often have gotten very insistent about wanting that "special relationship." Inevitably, there is a disconnect between what I want, what my husband wants and what my lover wants. I am usually put in a position where the tests have come back negative, but I am not yet ready to commit, yet the Dom in my life has decided to play hardball. If he's good, I usually end up giving in sooner than I had planned, and my husband is usually on the tail end of the communication - finding out in the most rude fashion imaginable - usually.
Sex with rubbers is much safer, but hardly natural. Foreskin belongs in a vagina - particularly foreskin wrapped around a very well endowed member. And, from a biological point of view - semen has many, many benefits to the female body.