Of course, I have to sell it on exchanges but what I'm telling you is about keeping it. If someone is keeping it on exchanges without any intention of trading then that's the wrong use of the exchange.
Exchanges are place where we exchange our assets into fiat or so but they shouldn't be used the same way on how we're using our hardware wallets.
I still don't get you.. Exchanges are for operations and funds are stored in the crypto wallets, no?.. When you send money for the exchange - you mention your wallet address to get them back somehow. So how can you leave the funds on exchange?