Would anonymous original poster be able to explain the connection between the OP and David Duke? I just don't get it.
Nor do I. I think we'd need to know far more of the OP's circuмstances, even his psychological background, before a reasonable surmise could be made. His evident belief that all Protestants are evil and thus merit being the objects of a Catholic's scorn and hatred is, I think, necessary but not sufficient for understanding his motivation.
There is also the chance, perhaps even the likelihood, that having learned everything there was to be learned, we'd be no less in the dark as to his motivation than we are now. Nor should we discount the possibility that the need to conform, to fit in with and be accepted by "respectable" people and opinion lies behind his actions and words. It is, after all, intrinsic to human nature to prefer being liked to being disliked. People hereabouts constantly congratulate themselves on their aloofness from what they style mere human opinion, but I don't believe a word of it. If it wasn't difficult and often painful to speak up for truth and thereby sacrifice the acceptance or admiration of others, there would be no virtue or courage in doing so.
One of the few advantages of becoming old (as I have) is that in some ways speaking the truth becomes easier than it was when one was young, in that the price one has to pay tends to be a lot lower. Most people don't give a damn what the old say or think and write them off as irrelevant or dotty. Thank heaven for these small mercies!