drummar-buah, that post above is one of the most intelligent and helpful posts I've read on these forums.
Control. You don't need AHEAD Uber 69XXX Extreme Joey Jordison Tree Trunk Special drumsticks to play Slipknot covers, you can do the same with 7As if you have the control to make your drums and cymbals sing. This is the reason why 5As are so common, whether they feel comfortable to you or not, they are there for every drummer to fall back on as they feel good whether you're beating the crap out of your hats or when you're swinging on your K custom ride.
My point being that, the best sticks ever (which is a very subjective and individual, I know), are the sticks that are versatile, the pair that you keep going back to. The pair that is able to perform at all dynamics easily, something that is tried and tested. You can't do good rimshots with your AHEAD JJ Sticks, and you can't get that good snappy sound on cross sticks. So why use it? When a nice pair of 5B hickory is able to do that AND MORE.
Also, which is why what drummar-buah mentioned is the blatant truth that many drummers choose to avoid. The drumsticks are your tools, you use different pairs for different needs, but you should never blame them for not performing to your needs, like aforementioned, each type of sticks has its own feel, but its possible to manipulate them to serve your needs for whatever situation. That's control.
Anyway, your 5Bs aren't a wasted purchase, just keep buying sticks whenever you feel the need to, after a period of a few months, you'll realise you have a whole arsenal of drumsticks, and out of those, there are a few "special" pairs that you favour.