I would love to own absolutely nothing, but have a portal follow me around, and anything I needed appeared through the portal, then disappeared as soon as I didn't need it anymore.
I bet something like this is one day possible and it happens.
People hoard for the same reason they overeat. Because scarcity has been the rule until very recently. When scarcity hasn't been the rule for for a long time I think these things won't be a problem anymore.