if creepers were proposed today, they would not be added to the game. they are too punishing and too unpredictable, like a wither who can spawn naturally or a phantom who doesn't burn up in daylight, they just don't fit the strength-weakness curve of other mobs. but you can't just delete them, their design is iconic, literally the face of the game.
solution? repurpose them. instead of blowing you up, creepers should seek out partially-grown crops and try to jump on them. look at it, it's a weed with feet! of course it would infest your garden!
note that it only attacks partially grown crops, this means its still possible to use wheat fields for aesthetics.