If we take Jesus’ prayer soon before he died seriously, then we must all strive to be one. We cannot be one if we don’t all consider such unity important. Catholics and Orthodox are the only groups that even try to make this a reality and structure their groups as if that unity was something they take seriously.
We can’t all be one if every one thinks they should have their own personal interpretation of what it means to follow Christ.
In heaven, we will all see that unity through Rome was correct and should not have been resisted precisely because such unity through Rome was exactly how God intended Jesus’ prayer “that all may be one” to be fulfilled.
Of course I pray that many who were not Catholic on earth will enter heaven - but once they get there they will all be Catholic.
It is a tragedy that such unity is not found in your bible.
Once a person gives their life to Jesus, repents and becomes a "new creature in Christ Jesus," there is no more striving to be one. We are one. One with each other, and with Jesus.
Of course I pray that many who were not Catholic on earth will enter heaven - but once they get there they will all be Catholic
You are welcome to your opinion from your belief system taught to you by Catholicism, but it is presumptuous of you to draw a circle with Catholics as the only Christians inside of it, and all the other Christians outside of it.
God drew a bigger circle, and you should be happy he included your denomination.