I grew up RCC, left the church in my 20's due to the rampant misogyny and medieval mindset. I joined the Episcopal Church in my 30's, which is the successor to the C of E in America. I love the EC for its progressive nature. A woman baptized my children and I have had leadership roles in my parish.
I get what you are saying about the rock-bound certainty of everything in the RCC being a comfort, but there are two basic problems. First, some teachings of the Bible are eternal, like love thy neighbor. Some were specific to that time, e.g. the subordinate place of women. The RCC has always been incapable of sorting this out, or do it with glacial slowness.
The other problem is when the RCC just gets it completely wrong, their sense of infallibility prevents any rethinking of the issue. Like the selling of indulgences or locking up Galileo for daring to write that the earth revolves around the sun.
This bloody pigheadedness led to the Protestant Reformation and centuries or religious wars, blaming the Jews for the death of Christ and antisemitism, and the cruel subjugation of women.
So my questions to you, OP, would be what would you say to Galileo about his treatment at the hands of mother church and do you really see the RCC's certainty that its teachings are infallible as an unalloyed good?