OMG this could not have come at a more fitting time! I am literally sitting in my pants and bra (too hot! Aggravated!) surrounded by all the stuff Ihave tipped out of various boxes/bags/little hidden piles from every shelf and cupboard in our house, trying to 'sort things out' and 'throw things away' (you will notice my commitment by the use of 'these')
I am such a hoarder! Keep every card, ticket stub, train ticket (I know, I know) not to mention all the shitty 'You are not only a daughter, but a friend' magnets I would NEVER display.
WHHHHHHHHHHHHHHHHHHHHHHHHHHHY???!
I do need to be surrounded by my things, and I totally get the DH who displays his personality around the house, but I also feel a horrible guilt about this...
SO I have decided to compromise. This stuff is supposed to make me feel secure, not totally disorganised and ovewhelmed. I have bought a lot of lovely boxes and labelled them Cards, Tickets, Diaries, Hotel Toiletries (I coud open an entire salon for little people), etc.
That's the best DH is going to get, I'm afraid 
In answer to your question, tough, I love 'finding' things from the past (all sentimental) and have a beat-all argument of 'for the grandchildren!'
PS I don't even have children 