To get more women seriously involved into technology, you realistically need to get more women to be unsocial and spend the majority of their lives planted in front of a glowing computer screen.
The reality is not that "careers in computers" are too hard to get into, or that we need them to be friendlier. In fact, I have personally found working in computers to be generally unfriendly across the board. I welcome any changes to make working in computers more attractive to women, because it would make it appeal more to myself as well. Since I already work in the field, it would just make the field better.
The fact is that a majority of women don't realistically want to be in the field once they know the full story of what is required to succeed in it.
I am aware of the people who have had computer careers and found them generally cheery, friendly, and easy, but I don't think this is the common case.