That's the conclusion I came to. It's not that I don't have the time, it's that I apparently value spending time with my kids more than the rapid progress of my startup. It's still dissatisfying from my startup's point of view, but rather than rail against the universe about it, I look it as a manifestation of my priorities.
Same here. I love the idea behind my startup and I love working on it. Have to say, though, I love the family more. I spend every spare minute I can on my startup, but not at the expense of my family. Their needs and spending time with them come first, along with the paying job that's providing for said family--it has to. If the kid were older, maybe I'd devote more time to the startup, but as it stands now, no.
Also, if I worked 12-15hr days every day, even doing something I love, I'd quickly grow to hate it. Not only would I resent the startup, but I'd likely be looking for an entire career change after a while.
I think asking what we really want is a good exercise for anyone. Once one realizes what's most important, one can focus on those goals and not worry about making excuses for the other things.
There's no "shame" in not starting a business, not majoring in a certain subject, etc, except what society tries to tell us and society is trying to tell us that 100 different things are important. It's up to us to find what our destination is and head there, in spite of what other people say.