BTW, regarding the “...the teaching of your church for 2000 years...”. Before the reformation, a lot of Catholic doctrine was the teaching of the church for a very long time. The Protestants threw a lot of it out.
My point is only that, when discussing issues such as this, just as the invention of the printing press gave us the reformation, the internet is purifying the Church as well, and even more. A lot of adiaphora beliefs are and will be changing, IMO.
What does that have to do with this question. Neither Catholics or Protestants "threw out" the doctrine of eternal damnation as a consequence of and an essential element of the Gospel.