Deafposttrib... I appreciate the spirit of your post... but...
the Scripture itself is clear that doctrines are important... doctrines are what separates Christianity from all other religions... if doctrine is not important, then Christianity isn't important, and you could believe whatever it is you want to believe and be saved... but this is simply not true, Paul was very clear about the importance of doctrines:
Gal 1:6-9 esv I am astonished that you are so quickly deserting him who called you in the grace of Christ and are turning to a different gospel (7) not that there is another one, but there are some who trouble you and want to distort the gospel of Christ.
(8) But even if we or an angel from heaven should preach to you a gospel contrary to the one we preached to you, let him be accursed.
(9) As we have said before, so now I say again: If anyone is preaching to you a gospel contrary to the one you received, let him be accursed."
John, too, warned us about believing in false doctrine as he battled the early Gnostic's who denied the real physical body of Jesus....
1Jo 1:1 esv That which was from the beginning, which we have heard, which we have seen with our eyes, which we looked upon and have touched with our hands, concerning the word of life"
and that if Jesus really was physical he would have been evil, since all the physical world is evil...
1Jo 1:5 esv This is the message we have heard from him and proclaim to you, that God is light, and in him is no darkness at all."
and that the way we live is important... because some taught that since the physical world was evil, it did not matter what we did "in the flesh" as it was inherently evil anyway, thus we could sin with impunity, it did not matter.. our spirits would remain pure...
1Jo 1:6-7 esv If we say we have fellowship with him while we walk in darkness, we lie and do not practice the truth.
(7) But if we walk in the light, as he is in the light, we have fellowship with one another, and the blood of Jesus his Son cleanses us from all sin."
some of these same people had doctrines saying that since their spirit's were pure, they had no sin in them...
1Jo 1:8 esv If we say we have no sin, we deceive ourselves, and the truth is not in us."
and on and on it goes... much of the NT was written to specifically combat false doctrines... and if "doctrines don't matter" it seems to make little sense that the writers of the NT would have been so concerned about it and would have written hard passionate words against the false doctrines either trying to worm their way into Christianity itself (Judaism, Gnosticism), or the other false religions flourishing during the time the NT writers penned their works...
blessings,
Ken