Reincarnation has no purpose. Doesn't even make common sense. Returning to a world that is impossible for spiritual growth since you have no previous memory of having past lives.

Even if it did exist in some fantasy world, gender has no purpose. Doesn't matter if you are female or male. The only purpose of the sexes is for reproduction.

Being reincarnated just so the 'soul' can do something over and over and over until it gets it right is a waste of universal resources and answers no universal need.

Only those who refuse to see themselves as ceasing to exist in a physical world believe in this theory.

Death can be hard to take without some sort of imagined escape.