Ok I will answer your question differently....<quoted text>So why does a butch lesbian dress and act like a man to attract another lesbian? The ones I've talked to unanimously say "thats who I am".
And how does that relate to evolution? Our sexuality is rooted in evolutionary purpose, defined over millions of years. This makes no sense on so many levels!
Some woman like to dress comfortably and short hair is so much less of a hassle.
Some woman dress and act like men becuase they feel that is who they are... some transition and become men and some are content with just the appearance.
Some woman go for the "butch" girls for different reasons. When I was younger I dated butch girls that looked more like guys because I lived in smaller town and when she looked more boy then girl we didnt get stared at and we could be out in public in peace. But no matter how boy she looked she didnt have the extra equipment. And even though the outside appearance looked one way when we were alone at home that is all that mattered what others saw.