Quitting because you can not run big ships? Piracy was built on the strategy of having little to lose or a matter of few ships - Being Frigates. You have done a good job, yes but it was inevitable that your 'big ships' would be targetted. Yes the game has flaws; its been said countless times. Voodoo is a part of the game. You can either counter it, or can't cope with it. If everyone quit due to this - Pirates Glory would be long gone. Not saying you are wrong however just consider what I am saying.
In no offense good sir, now you know somewhat of how 'Merchants' feel when they lose ships to you.
True fighters do not quit, they find alternatives.
When they fail, they try harder.
All because you get hit, does not mean you are going the ground. You are experiancing things, learning new things.