Men can still be physiologically satisfied by said rubber sheath, because all they're really physiologically driven to is to orgasm. Women are physiologically driven to want babies, which nothing can satisfy except having or adopting one. I suppose they could adopt a man and they'd essentially have one too.
Even if this was true, no civilized society should base policy on this. We've made the decision not to act on people's "tendencies" based on biological groups they belong to but instead to consider them as individuals.
Say we found a group of people we could identify by DNA who were physiologically driven to steal, but individuals were quite capable of not stealing despite this gene. We wouldn't exclude such people from positions of trust just based on their having this gene. In fact, we wouldn't treat such people differently at all. So long as it's ultimately an action with an individual's conscious control, we care what they choose to do as individuals, not what their biology "pressures" them to do.
A civilized society focuses on individual's chosen actions, not the biologic forces driving those actions. Many women choose not to have children and have no children. They shouldn't be treated differently because they had to make that choice.