I'm not advocating for that at all. Generally think the idea that a heroes life has to suck to be interesting is stupid and lazy. Applies to family (particularly it seems parents or significant others) being killed for motivation or the idea that a happily married character can't work. So, you're preaching to the choir.
Again, don't disagree. But it typically serves a narrative purpose when he's in the Smallville context as a late teen or so. Something like in All Star. Overconfidence bread by youth and his fantastic abilities.
For the Man Who Has Everything and Birthright both use it to a significant and powerful degree. Birthright he has no knowledge of Krypton beyond what he saw on the tablet and FTMWHE doesn't need him to have experienced Krypton to show the tragedy of it. Just his desire to experience it.