People and denominations certainly debate its existence now.
Well...I was speaking of believers not atheists of course.
Every religion has their version of "hell", even the JW's ( the lake of fire in Revelation).
They may choose to name it something else, but every religion has a version of a "place" where the "bad people" go and never return ( some are tormentd while others simply never return).
Certainly all the monotheistic ones do.