Exactly... but there
isn't another person talking to me about
my (<---- this is a good word in this context, isn't it?) stuff. I am using software which gives me the ability to access
my stuff.
I am the user, so yes... 'My' imitates the user's point of view (you've explained it very clearly) and this is exactly what is so fitting about it. Since I
am the user, wanting to access
my stuff.
Ah! Yes, this can go on forever...

.
Another thing is... when you translate this 'Your'-concept into Dutch it becomes actually much
less professional. 'Jouw account' (which means 'Your') is really rather odd compared to the common and widely used 'Mijn account' (which means 'My'). I don't quite get the relation between '
The whole point of XenForo is to encourage people to open up and converse with other users on the site, so it makes sense to avoid introversion' and the choice of 'Your'. Maybe someone can explain that, so I get it? I do however get the point that XF is so socially and user-centered that I would in this light expect the choice of 'My', because... it imitates/relates better to the user's
own point of view indeed...
Funny how one can use the same arguments and come up with the opposite solution.