It is less a matter of being better than everyonr else out there and more about the internal transformation that takes place. The more I had trained in martial arts and learned Sun Tzu (tldr: if you are not cheating, you are not trying hard enough), the more I realized that I did not really care that much for the narratives that used to drive me to train.
All the traditional martial arts went through that kind of identity crises. I have a friend who was ex military, practiced xingyi with me and Aikido; he tells me, in this day and age of drones, the idea that you are a walking badass because you know king fu is absurd. If that is the case, why keep going? My personal answer is that it has become about prevailing over myself (not about defeating others) ... and because it is fun.
The reactions among the Go world seems varied. Fan Hui said he learned a lot, and his own workd ranking shot up. After the first match, Ke Jie said he felt bitter, that these are going to be the last games he play against an AI. Yet he agreed to help Deepmind develop an analysis tool. Michael Redmond (one of the commentators) seems really excited in both the Lee Sedol matches and Ke Jie matches. A lot of Go pro players seems to feel more excited, not less, that AlphaGo is opening up possibilities. That the game has even furthur depths to explore.
For myself, I know I will never reach anywhere near the pro dan ranks in Go; I am not even sure I will reach the amature dan ranks. The journey to get where I am at, playing very informally, has helped me a lot with many other parts of my life. One of the biggest influences was practicing life-or-death and learning how my emotions affect my play. When I first started, I used to play moves because it felt safe, not because it was safe. Or I would respond locally because not doing so felt insecure. Reading through those positions helped me to not only read through what is there and the read my arising emotions at the time, that started to seep in other parts of my life. For example, my software programming style started changing. Lessons learned from making good shapes, capture races, living by making two eyes, false eyes -- all basic double-digit kyu stuff -- found their way into how I structure code, how to code less defensively, and a sharpening of my mental focus to read code that is actually there, not just what I think is there.
That change in myself is, I think, a better fruit of my effort.