There aren't more lady songwriters for the same reason that there aren't more lady doctors or lady accountants or lady lawyers; not enough women have the time for careers.
Cord blood stem cell units have been shown to be a suitable alternative to adult bone marrow for the treatment of many diseases, including sickle cell anemia.
I don't know what singers feel like when they make a song and people clap along and love it, but when people walk up to me and say the food was outstanding, that's what it is all about. I cook because I like to make people happy.