The first two points absolutely resonate with me. There's so many things in my life that I've done, that had I known what I was in for, I probably wouldn't have done them. I guess every new challenge comes with it's obstacles. It is definitely better though that we don't get to see all the obstacles before we stepped in.
In the end the results and/ or lessons makes the choice worth it. Though we might have our doubts while going through the process. Thanks for the food for thought :-).