I believe most drinkers -- of bourbon, and otherwise -- rarely move beyond habituation. If Jim Beam White were 'bad' bourbon, it wouldn't have the following it does. Luckily for Jim Beam, the combination of price and drinkability prompts many to never look for alternatives.
I suspect once you sample a variety of bourbons, you will find something other than JBW that you prefer both for neat sipping and mixing, even accounting for price. But, until that happens, Jim Beam is acceptable whiskey.