I was encouraged from an early age in math and science. I was given computer-ish toys (Big Trak represent!) and, later, computers. When I went with my dad to work and played around with their computing gear, nobody said that wasn't something boys should do. In my computer classes, everybody looked just like me. Nobody ever told me that I was good at these things "for a boy". Nobody suggested I should be spending my time on dolls, or make-up, or being appealing to boys. Nobody told me I should pick a college based on how many well-off men there were there. Nobody ever asked me to make them coffee because they thought I was the receptionist. Nobody ever told me I was too pretty to be a programmer. People listen to me more easily than my female colleagues.

And a zillion more, just for being a guy. Being white is a whole other set of things. As is being straight in a heteronormative society.

If you're really interested, these are some good starting points on examining and acknowledging one's privilege:

http://danilocampos.com/2013/02/unpacking-my-knapsack-the-pr... http://www.amptoons.com/blog/the-male-privilege-checklist/ http://whatever.scalzi.com/2012/05/15/straight-white-male-th...