Storing of Bitcoins is against Bitcoin.
No one will offer services for Bitcoin.
Spend Your Bitcoins.
I think bitcoin storing becomes a problem when no more is added. I think if bitcoin is constantly added to a holding wallet that it will be ok since the wallet holder is buying more bitcoin all the time.
i dont think holding bitcoin is buying more bitcoin its depends on the price its increases and decreases even the price increase your bitcoin doesnt increase the value just add , they are alot of people there holding their bitcoins and waiting the price to increase