system
sentimental: When I had to clear out my old bedroom when I left home, I really found it hard to throw away a lot of the stuff in there! 
gpt
When I had to clear out my old bedroom when I left home, I really found it hard to throw away a lot of the stuff in there!
human
Why do you find it hard to throw away old stuff
gpt
Just thinking of all the good times I had with toys / books etc when I was a child! Even though I wouldn't use these things again, it was still hard to throw away 
human
So what are you planning to do
gpt
I ended up giving it to charity - that way someone else can have good times with them! 