String theory is wrong. Loop quantum gravity is not a theory of everything. Garrett Lisi is wrong. Who then is working on a theory of everything? In the arxiv there are no proposals.
Let me summarize. Imagine that you are a young physicist. You dream about working on the theory of everything. You study physics and start putting your nose into research. What do you experience?
If somebody explores an option for the theory of everything, the first experience is what happens to string theorists. Caught between the obligation to follow Witten and his aggressive followers or to agree with the aggressive critics.
And both camps agree on one thing: if a young physicist does some research, even outside string theory, he is an idiot or crazy. Everybody in the field knows: whatever the young researcher does, he gets hostile criticism. Of course, the same happens to old physicists. The consequence? Nobody actually works on the theory of everything. Of the two or three-thousand researchers in high energy physics, "nobody" is actually working of the theory of everything.
Aggression is the reason that the theory of everything is still lacking. Homo homini lupus. If you have a story to tell, you are welcome to write me.