Celebrim
Legend
Backstory?
As I said in my post, backstory doesn't tell you things that alignment does. The definitive example here is that each of the Seven Sentence NPCs in the classic Dragon Article could be of any of the nine alignments, have the same backstory, and yet be because the variance in alignments be completely different NPCs.
I find it really odd that anyone playing an RPG would see their character as a "pawn."
It's by far the most common stance in traditional play. Games like D&D, CoC, Star Wars, GURPS, etc. generally default to pawn stance among most players. I won't venture claims about other "modern" game systems as you call them only for lack of experience sufficient tables that make me comfortable stating what is normal. But I will say that at Cons, Pawn stance is most common across all the game systems I've tried to expose myself to.
That just defeats the whole purpose of playing an RPG.
There is no one purpose of playing an RPG. There are probably a dozen or so reasons to play one, and most players have multiple goals in playing an RPG. Many of those goals are not only enabled by pawn stance but potentially hindered by it. If you sit down with a whole group of players whose primary goal is challenge, and you start playing as if the whole goal of play is narrative or self-expression, you are likely to cause table conflict.
And contrary to your assertion, most RPGs do not need anything like alignment.
So you say, yet you give no indication behind your opinion and you seem to think I'm not familiar with a wide range of RPGs.
Most modern RPGs give you guidance on how to create backstory. Alignment is useful for players who struggle with that (see my previous post), but it's demonstrably not essential for most.
Thirty pages of backstory does not necessarily tell me anything about your character's alignment. Alignment is not even remotely a replacement for backstory nor is backstory a replacement for alignment.