Don't be so hard on yourself. "Building a business" is one of the most difficult adventures you can take in life. Stop worrying about how much time you have too, that is ridiculous. I have family friends in retirement (65+ years old) that are building incredible little niche companies. What do you want to build?
I have been amazed at the interest level in this game. I shared in the excitement and could not wait for the Mac version. Now the bad backlash, bugs, and generally horrific reviews have significantly deflated my interest. Gaming startups - make a better one!! ;)