If I had no expectations, unfortunately, I'd accomplish nothing - including employment or, if I were so inclined, even be motivated to do the work to survive off of the land.
I'd rather go to the store. But in order to do that you need to have money, have a job and be a tiny little cog in this sometimes very unfair system. Beyond survival, I thlink I would be rather bored with no expectations, and my ego would demand some kind of mastery to both feel good about and about which others could admire me. Yes - I admit it - I want to be respected and admired. I want to be seen as someone with a lot to offer.
In full candor, for example, I am an above average pianist. I am sometimes great. Most of the time I am just a little better than good. I am not happy with that.
As a writer, I wish I had the ambition and discipline to write every day, but procrastination, distraction, depression, anxiety and sometimes just plain laziness get in the way. This does not leave me satisfied.
I want to leave a mark on this world. I want this place to know that Stan was here! I have lots of ambitions around intellectual and mathematical pursuits, but not the extra something to go out and learn trig on my own and catch up so that I can explore Einstein's theories and complicated equations. I am very good at math, but I could be so much better.
I guess the concise answer to your question is that, as far as we know, we are only here once. I am not satisfied with a "simple" life, nor with one in which I continue to struggle to meet my daily needs.
Disappointments are a major setback and have fed some very serious depression and worse. My anxiety, too, is high because of expectations, and the memory of past failures and disappointments which eat at my confidence and drive to take the initiative.
If I could solve that - I'd be on my way to achieving the life I have always wanted to master and the goals I have long wanted to reach.