Is Nostalgia Just Stubbornness?

[JuliusHackebeil]

I wrote a definition of nostalgia some time ago and I think it fits this thread:

Nostalgia is the painful realisation, that something you had an attachment to is already and firmly in the past. When we form attachments, we create a part of us, that is attached to something. And when we realise that that something is in the past, we also realise, that this one part of us is in the past. The thing we are nostalgic about might still be around, but it came from a different time, its presence is no longer there, it is not, as it was. That is because we are no longer as we were. The part of us, that was attached to it, cannot be there anymore. It is dead. Things we are nostalgic about make us realise our own mortality, make us realise how we die with each passing second, for we cannot engage with them as we used to.
But even if our own mortality pains us, in the case of nostalgia, we like to bask in it, since we like being remembered who we were. The hope that we might feel as we felt, think of the world as we thought of it, become innocent again before our own judgement and that we, even if it is only for a fleeting moment, could forget the worlds pain as we know it today, a pain still greater than the one inflicted by the realisation of our own mortality; that hope is what makes nostalgia so bitter sweet, so very deliciously heartwrenching.