Self sufficient men don't need women either. The men who won't do well without women are the NEETS, Husbands who have been treating their wives as free domestic servants for the past few decades, men who need caregivers and boys.

Women do the vast majority of the work raising children even in two parent households. If women and girls suddenly vanished there would be a lot of orphans and a lot of irresponsible dads who would need to start picking up the slack and actually take care of their boys. "At the same time, solo parents remain overwhelmingly female: 81% of solo parents in 2017 were mothers, as were 88% in 1968." Source

As per usual women are doing the most thankless and difficult tasks when it comes to caregiving. "Estimates also suggest that the majority of caregivers are female. The percentage of family or informal caregivers who are women range from 53 to 68 percent, according to the Family Caregiver Alliance. While men also provide assistance, female caregivers tend to spend more time providing care than male caregivers (21.9 versus 17.4 hours per week). Further, women are likely to assist with more difficult caregiving tasks, such as toileting and bathing, while men are more likely to assist with finances or arrange for other care (Family Caregiver Alliance, 2012). " Source

Stats like these are why I believe women are the backbone of civilization. If we weren't around doing all of this free essential labor, the disturbingly high percentage of irresponsible men would have to shape the fuck up or society would collapse, because they outnumber the good non parasitic men by a good margin. Especially in more misogynist cultures where women are basically property passed from the father to the husband.

People are social animals, so they do need social interaction and benefit from it, they just don't necessarily need that social interaction from the opposite sex.

Being social doesn't set us apart from other animals. There are countless examples of animals with complex social hierarchies and systems. Scientists are discovering more and more animals actually have culture and pass it down to the next generation, communicate with each other and teach things to their young. Tool use is more common than once thought.

This is one of my favorite articles about animal culture and inventiveness. I found it funny that even in this troop of monkeys males were less inclined to learn from females. A pattern that is also frustratingly common in human societies.
"Masao Kawai, another of Imanishi’s students, described this phase as “pre-cultural propagation.” Imo had innovated a new behavior that spread to her peers. Age and sex both influenced its transmission: Younger monkeys and females were more likely to learn potato washing than adult monkeys and males. The next stage began when Imo and her peers matured and reproduced. Now the behavior spread to the next generation with every new baby, males as well as females, learning sweet-potato washing from its mother. Age and sex were no longer factors. “Pre-cultural pressure is working,” Kawai wrote. A new behavior had become fixed within the troop." Source