You don't. If they wanted to do it, they would. We should and never root for a 50/50 split. It will most likely never happen and hurt others in the process. Genders are different, but we should not disdain this but embrace it. We are different, but does does not mean that is bad. One gender likes certain things more than others. What we should be is more inviting to other genders who want to join in activities which their gender does not typically do, accept them.