How about a historical mooring then. Nothing could be more solidly planted on the solid foundation of rock that is the undeniable history of the One True Holy Catholic and Apostolic Church founded by Christ Jesus. To deny it is to deny history itself.
Unfortunately, your argument demands a very selective reading of history and that you must make vast assumptions. To keep up this idea, you must never look under the rug, for if you do, your world will be changed. This would be a good thing.The Roman church of today is not the Apostles Church.
Most of what Rome teaches was not taught before 100 ad.
Christ did not found a "church". He created an "assembly" of those who entrust themselves to Him.
The later accretions from paganism, talking to departed saints, Mary being sinless and remaining a virgin, Mary being everyone's mother, patron saints, temples, popes, holy water, the sacramental system of grace, Christ as physically present, etc. is indeed historical, but not from the time of the Apostles - nor rooted in the historicity of the Scriptures.
It was added much later, as Rome incorporated the pagan practices of those they conquered. And of course, some is directly from Greek idolatry.
And we come full circle to why God's Word is primary Truth and authoritative and unchanging.
And why we are commanded to "love God with all our mind" and to seek and do His truth.
Again you are in a tiny minority group of individuals that hold that opinion. On a good day you can’t muster more than five on this forum.