I think the difference is "I must keep this stuff because I may need it for something in the future/I plan to use it for something in the future" with anxiety attached to not having it on the off chance that you do need it in the future. Whereas collecting something happens because you like that particular kind of thing and would like to have more of it.
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(no subject)
Date: 2010-06-18 05:57 am (UTC)