"Why do you go out in public (or want to)" is a question often asked by many people.
I am sure that the answers vary greatly. I suspect that for many of us there is not just one answer.
For me, there are several answers. I enjoy looking like a woman, acting like a lady and being treated as a lady. I nearly always am treated better by clerks, wait-persons, etc. when en femme.
I suppose that one of the reasons is ego. If I find that if I think that I am looking good, I enjoy just being out with other people. It is always enjoyable to receive compliments.
Yesterday was such a day. Before meeting my "coffee buddy" for our weekly get-together I went to Target to get a few personal items. As I was checking out, the clerk complemented me on my nail polish. I thanked her and told her that it was new and also was not expensive.
Later I went to Trader Joe's to get a couple of things. As I was walking in one of the aisles a young man (younger than I am, anyway) remarked how he really liked my yellow skirt. He thought that it was such a great spring time color.
I also have had many situations when in various stores where employees (frequently men - grin) approach me and ask if they can help me. This rarely happens to me when I am in male mode.
I find that life is much more fun when I am presenting as a woman!