I was the #7 daughter of a single mother, but moved onto #4 pioneer sister during my teen years. My motivation for pioneering though was that is was the ONLY way to get recognition. If you wanted to meet any single brothers, you needed a way "in" and pioneering did that. It also got people to say hi to you at meetings, you weren't lowest of the low anymore.
On the topic of PO's I just found out the PO of my cong when I was in my early teens got removed because his daughter got DF'd for having sex. Why does it give me so much pleasure when they lose their grip on this imaginary power????