Changing of perspectives?!

I was just thinking of what is it going to be like if a guy can change his perspectives of mind? For example, doing the job which is usually done by ladies like Nurses, Teachers and etc. If all this jobs, guys also manage to do it then will all the ladies going to become jobless? I think the answer will be a YES! Definitely will! Actually this kind of thoughts have been in my mind for quite a few days already. That day when I went for Sime Darby Helathcare Seminar the guy was just saying this. And it makes me feel that he is right actually. If a guy is willing to become a Nurse in 1 day then ladies is going to stay at home! There will be no more job for ladies in this world. But will all the guys change their perspectives of thinking? This was what I was wandering for these few days. Hope that I will have an answer very soon.