I feel so much for the hoarders/people dealing with hoarding relatives. It's such a misunderstood condition and can be very traumatising to live with
Whilst my mum is a hoarder and I can see how it gets to her (DDs can't stay asthere is no where for them to sleep, etc) I do have a slight problem with it myself. I have OCD and trich so compulsions and obsessions are my forte!
I have trouble getting rid of baby things though I did give a friend about 8 big carriers of 6-9m clothes (yes I did buy that much baby clothing - though it most was cheap/2nd hand and gone through 3 DDs and was still in good condition). After she left with the clothes I felt that perhaps I was too ruthless and DD3 might fit into some of the clothes again this Autumn (some were Autumn/Winter stuff) she's 22m - she is fairly petite but she's not fallen off the bottom cenitile so why would she fit in it???
I also have a small pile of DD1's odd baby shoes as I can't throw them away as the other shoe will just appear out of nowhere and then I will have effectively thrown out a perfectly good pair of shoes. DD1 is 5.5 years now and we moved house in 2006 after she grew out of them. What are the chances of the other one appearing now?
I also have a tendency to hoard paper work (though years ago I would get my bank statement and just bin it that day) now I have things like a telephone directory from a job I left in 2001. It's as though I don't trust my brain to hold on to things. When I was pg with my eldest I had a terrible time and was signed off work quite early on so did n't have a chance to sort my computer/desk out. I was so sad to lose all DH's emails to me when we just met and were being a bit flirty/getting to know each other. I wanted to print them out to keep 
I was (and I still am) married to him so it's not like I was unsure of his feelings or needed them to keep in contact with him. I just didn't want to let go of that feeling we had in the beginning as things remind me so vividly of events/times in my life that I have no confidence my memories are real unless I have something to back it up.
My mum places such a high value on things and the memories that are attached to them that I have been brought up to feel the same. My DDs have my old dolls, teaset, even a rattle my brother had as a baby and at my mum's play with my old My Little Ponies, Sindys, Playmobil, etc. I
t's niice in a way that my mum has passed them on but at the same time I am still resentful of my parents selling my doll house that my Grandpa made for me and he and my Grandma furnished it, Grandma crocheted rudgs etc. My parents got rid of it with out asking me (I was about 8) as my mum didn't like the proportions and felt it was unnecessary to have a staircase in a dolls house. Now that would have been something to keep not My Little Ponies!
Sorry for essay. I just needed to get it off my chest.
again.