Is it bad to drink black double aged whiskey?

It is not clear what you mean by "bad". Black double aged whiskey is a type of whiskey that has been aged for two periods in different barrels. This can result in a more complex flavor profile, but it does not necessarily mean that the whiskey is of higher quality or that it is better to drink. Ultimately, the best way to determine if you enjoy black double aged whiskey is to try it for yourself. If you find that you like the flavor and aroma, then it is not bad to drink. However, if you do not enjoy it, then it is not a good choice for you.