My current avatar is the generic DU one for both practical and reasons related to my thoughts, feelings, and emotions, though all of them relate to the concept of anonymity. I feel safer in myself being anonymous, with only those I've built a personal connection with knowing who I am, and this relates to my ideas around both art and social media.
The best art, I feel at this point in my life, is created by those who aren't so worried about building and maintaining their self-image, how they see themselves. The best actors, as an example (and in my opinion), tend to be those who keep their private lives private, as opposed to giving the world access to everything about them.
Regarding social media, I feel that its incautious application to everyday life is the biggest unsung scandal of the 21st century and has very literally claimed lives. It's a wonderful tool, just like every tool is wonderful, going right down to the celebrated spearhead and wheel. But there's always a dark side of "wonderful", dark wonders to balance the light, the regressive and progressive, ying and yang. Not teaching people (especially young people, and I was young when modern social media first started proliferating) how to divide their public and private selves in this brave new world is the dark wonder of social media.
So... if you had the time and inclination to read all of that, that's why my avatar is nothing in particular. It was a black square for a few days, but the generic image provided by the site felt more appropriate, and less of a self-conscious statement. Whatever you choose says something about you, and the site's generic avatar says the least, I feel.