Hello everyone as the title says ^
Do you store your bitcoins online or on a wallet on your computer, perhaps cold storage?
My Bitcoin so far was in mycelium , and electrum wallet. Then I also have in the exchange sites such as bittrex, c-cex, novaexchange, and yobit but not that as high amount only enough for buying altcoin if there are coins in the platform will be dump.
Yes its better not to put huge amount of bitcoins on exchange site as you never know how long those sites will survive and if gets hacked or disappeared then you will be loosing all your coins so its always good to save them in offline wallet.