On the one hand I definitely understand what you're saying. On the other hand the only regret I have, but it's a big one is that I didn't know then what I know now, and I know that this will persist to some degree throughout my life, by which I mean to say I'll always want that second chance to apply what I know to the situation that taught me what I know. That may make no sense.
Also, I don't really want to return to the times of childhood. You know how people tell kids that these youthful years are the best of their life. I now believe those people are full of sh*t. I'm having so much fun at any given moment even when I'm frustrated with girl problems or some fucking program that won't properly compile. Now I'm in control of my life and I'm here because of the choices I've made, good and bad, and if that wasn't awesome enough I now am able to appreciate that. My room is a mess because I chose to do something else and I may get to go to a proper university and embark an intellectual journey of astounding proportions because of my choice to finally try in school. When I was a kid, yeah I was ignorant, and if ignorance is bliss, then I'm right: Bliss is f*cking boring.
I realize this comes off as pretty after-school-special and lacking a central point but your post reminded me of this, and it's an encouraging thought to me. Also, if it's any consolation your description of your familial life is not entirely dissimilar to mine, so it's not as though I've led a completely unrealistic life of charms and blessings.
Additionally, I really like your childhood animism, it implies a human desire to see some purpose beyond the mundane. Whether that is true or not is up to the individual, but everyone's had it for a second. The story is tremendously relatable.
Edit:Forgot some people think swearing is offensive. Added asterisks because they are like blinders to the easily offended.