As a logical thinking human being, if you are constantly being told you should go be a teacher, nurse, etc and then you end up in a field where you are told you do not belong. Where every day you have to wonder if the guy smiling creepily at you is listening to you or staring at your chest during scrum. Where you wonder if you should report the guy who would not let go of your hand when you and your coworkers went for drinks after work or if that would make them fire you for being a disruptive influence. Or maybe you should just not socialize with your coworkers.
If you are an intelligent human being who could go do and learn whatever you wanted, which was why you went, fuck conformity, I'm going to program and did it, why would you stay in an environment where you feel unsafe, objectified, and unwanted?
And at the end of the day, if another human being tells you that your actions make them feel unsafe, objectified, and unwanted, why is your reaction to tell them to leave?
Have you considered that perhaps there are girls who do not like playing with dolls? Who wanted the legos and Knex, who their parents had to threaten to keep them from taking apart the television and wanted a soldering iron instead of Barbies. That the very girls who ignore the conditioning you mentioned who make it regardless of social pressures when they realize that you, their peers, will continue to think they do not belong and they will have to fight your mentality for the rest of their lives, that you would rather believe that they simply can't hack it so you can justify the job distribution, why should they have to endure the perpetual questioning, lewd comments, uncomfortable stares, and stress? Why as fellow human beings would you ask that of anyone?