How could I be missing the point if you're also admitting to not understand my side of the argument?
You could actually say what your argument is instead of making confusing statements like this one.
The example in "Thirty Days" is just that--an example. It doesn't really matter what the point of the episode is; it's just another example of Paris acting out of line.
The point I am trying to make, if it isn't clear already, is that Paris and Kim are pretty immature overall, more so than other Trek characters, like Tuvok. I don't think that's a very controversial thing to say--I think most people would agree with that. Other characters act childish from time to time, but Paris and Kim just don't ever seem to grow up. It's the way they are, the way they're written. The writers could have developed them more, made them mature more as the series progressed. It would have been interesting, for example, to see what Paris would have been like as a father, or maybe see Kim take on more responsibility and get a promotion. But we don't get to see that.
Those are not the personalities those character are written with. Parenthood doesn't always bring maturity, going to a Trek or Comic Con can prove that. Hell, the subjects of debates we have on this board can prove it too.