[Opinions] I have the same association
(maybe because we're not far apart in age), but I prefer to ignore it. I focus on the apostle Simon Peter, and all the many other positive Peter references (leaving aside sillier stuff like the pumpkin eater. :-/ )
Similarly I have a preference for Denis over Dennis, and resist all those who point out the potential for Denis to be misread, or teased, as Penis.
I also chose to ignore all the people (well, two of them) who insisted that Scarlett would become Harlot and was therefore unusable.
Anyway. I do have the same Peter/penis association; I just ignore it.