But the problem here is that you don’t exist by and for yourself, but for and with everyone else. You can come to your own conclusions, and so can your neighbor. You may not like his conclusions, not he yours. Humans have wonderful capabilities of rationalization, can convince themselves of anything - literally.
That's why I went RCC after more than twenty years as an Evangelical. The "special pleading" that gets passed off Biblical understanding would be truly terrifying if these people really believed they'd ever have to give an accounting.