Strange Journey probably has the best neutral endings out of any SMT game.

Neutral endings tend to be the "golden ending" in most games, where everyone gets to live happily ever after. This makes choosing another alignment pointless from the story perspective.

But SJ does neutral the best out of all games. You don't get to just kick the angels and demons out and live on as if nothing happened. The schwarzwelt will keep appearing, and the only way to stop it for good is to choose a side to allign with.

But if humanity really wants to be independant, then they need to own up to that choice. Either by constantly destroying the schwarzwelt when it apears, or you the player have to take the responsibility and become humanity's deffender.

This is what a neutral ending should be. Getting rewarded with a happy ending with no drawbacks for not making any hard choices doesn't make sense. That's why SJ's neutral, and to a lesser extent nocturne demon ending, are in my opinion the best written neutral endings in the series.