The topic is "Sex After Hysterectomy", not "To remove or not to remove the ovaries?" not whether to remove the ovaries.
The uterus is a hormone responsive sex organ that supports the bladder and the bowel. Women who experience uterine orgasm will not experience it without a uterus. During a total hysterectomy (removal of the uterus and cervix) the vagina is shortened, made into a closed pocket, and sutured shut at the top of the vagina.
When the uterus is removed women have a 3X greater incidence of heart disease, and when the ovaries are removed it's 7X greater. Taking exogenous estrogen, that which is not produced by the ovaries but it taken as a pill, patch, implant or injection, may reduce the risk to some degree, but it puts women at risk for blood clots that can cause a stroke.
Your link is to a bioidentical hormones website. Women are at increased risk for endometrial cancer, breast cancer and stroke from any type of hormones, whether they are bioidentical or manufactured by a large drug company.
The Hysterectomy Educational Resources and Services (HERS) Foundation has counseled over 900,000 women. Many women contact HERS who have endometrial cancer or who have had a blood clot that caused a stroke after taking bioidenticals, as women who take other estrogens, such as Premarin, Climara and Ogen.
Focusing on whether to remove the ovaries implies that hysterectomy is inconsequential, as long as your ovaries are not removed. Women and girls are not taught about the functions of their female organs. Watch the short video "Female Anatomy: the Functions of the Female Organs" at www.hersfoundation.org/anatomy and discover that the uterus and ovaries have critically important functions all of a woman's life. There is no age or time in a woman's life that she doesn't need her uterus and ovaries.