I think that when one is accustomed to walking with the Lord, apart from the props to do so, seems quite awkward at best to try to do so after the fact...and at worst as if an affront to Christ. I can understand some returning to the catholic church after once leaving...it is familiar to them. But for those who have walked with Christ to return to the rituals etc. just seems hard to imagine...so one can wonder where their salvation was actually rooted to begin with....in a church and it's dogma or the person of Christ. It does seem God will Himself have to do the sifting when all is said and done.
God will indeed to the sifting, and while as evangelicals who hold to the supremacy of Scripture and its basic literalistic interpretation, we most universally agree on foundational faith such as are affirmed in the Nicene Creed, and thus also oppose principal doctrines which are contrary to that, and which rest upon an authority over Scripture, but can allow various degrees of interpretation in secondary matters, which Rome also does, officially as well as effectually.