Ok, Fallout 1, you were born in a vault and you've never been outside and you have to venture out to save the vault and you choose to save the vault because your character must care for it, the reason you care for it is whatever you make it out to be.
Fallout 2, you come from a tribal village, your ancestry is of the protagonist in the first game, you have an aunt and I think a grandmother as well but their dialogue doesn't define your past too much so while it is a departure from Fallout 1 at least it is still vague enough. You care enough for your village to go out and find the GECK. You are also the chosen one, which is a meaningless title, really.
Fallout Tactics, you're a... Tribal? Former Tribal? You're a new recruit and you joined the MWBOS.
Fallout 3, mother died in childbirth, amata wants to be your friend, you live your life in the vault with your father until the age of 19 when he leaves and you're forced to leave as well. When you do leave you try to find him.
Fallout New Vegas, you delivered 2 packages as a courier, one blew up nukes, one got you shot.
Fallout 4, you are not poor, you're financially secure enough to buy a robot, in fact, you don't have technophobia of any kind since you're allowing a robot to near your baby. And that's right, your baby, you got a baby! And who do you have a baby with? Someone of the opposite six. And you seem relatively happy together. You live in a nice enough neighbourhood and you've secured your future with Vault-Tec. Oh and the guy got military background.
It's not 'just' about sixuality, it's about sixuality 'and' various other things.
In terms of which games are most vague when it comes to your background it goes like this: FNV>FO1>FOT>FO2>FO3>FO4
See how far to the left FO1 is?
See how far to the right FO4 is?
You really don't see a difference, still?
If not, then whatever. I'm not going to debate this.
The facts are clear as water. Every game forces some backstory on your character but the ones from Bethesda forces more defining characteristics on you than any of the others do.
Also, this is going offtopic so that's another reason why I'm not going to continue debating this, ain't the right thread.
Yeah all I need is closure so that I can properly move on. Until Fallout 4 is released and I see that it is just as bad (if not worse) as I think it is going to be I won't have the closure I need. So ya'll are stuck with me for at least a year more.