Yup... I consider them Game Trophies and I only play for 100% each game! Hence why I rarely sell my games as well!

No when i finish a game i will never replay it

Yes, I always do that even when I know I'll never replay the game.

Nope. But barely 100% games.

No, if I 100% the game I'll probably never go back to it unless I start from scratch so I won't need that save anyway.

I wouldn't say treasure. But I tend not to delete game save files because they are typically not large enough to make a difference when it comes to managing HDD space. Deleting one 8th gen indie game will free up more space than deleting every game save file. I wish Sony would give us more than a measly 1 GB of cloud save space.

So, which ones have you gone for?

My 100% Ocarina of Time isn't going anywhere. Even though I still have the 3DS remake, that's one thing I will never delete.

Nope, not in general. Will certainly not play it again and I have the achievement to prove it
The only ones I keep is the Mass Effect ones or ones that I know have a chance to be re-used in future games...

But I can definitely understand why someone would treasure them and keep them safe.

I never delete them. It would make me really sad if I did XD