Because I do trades regularly, almost majority of my bitcoin quantities are on exchanges. Why? It's easy to execute trades while they are on exchanges because coming from a main wallet, bitcoin will surely eats too much time just to arrived on exchanges especially with the current bitcoin network status.

I know the risk after all and Im eyeing too for long term holding but I want to play with my coins and not just to let it sleep on my main wallet. This is part of the challenge.