Jesus told us there is a place such as hell.  The numerous Saints have told us there is a place called hell,  and our Blessed Mother has told us as well.  I try to base my actions so I don't offend our Lord Jesus.  I'm still working on it, but  I try to do better each day, but it is a struggle at times.  As Padre Pio is known to have said to a person who stated hell did not exist " You will believe it when you get there."  Disbelieve if you wish at your own peril.