Most of us are trying to create something of value that will allow us to get away from the corporate job frustrations.
In the end you might be working longer/harder than that frustrating job, but at least it will a) provide for you and your family b)something you are proud of c) enjoy while doing it
Oh, I can definitely sympathize with that position, having been in it myself, and I didn't mean to belittle the efforts of those currently trying to escape.
I was speaking as someone who is already doing a startup. I've made the mistake of trying to have "serious" side projects at the same time... it's not a good idea.
A finished project will help in that direction.