Mentioning previous postings is not intended to discourage more discussion -- further questions, discussion, and debate is always welcome.

Given how much the Renaissance revered the ancient world: The FAQ has a section on Ancient art at https://www.reddit.com/r/AskHistorians/wiki/art#wiki_ancient_art . The applicable article is "Ancient Greek men thought the ideal male body possessed a small penis. Do we have any idea what Greek women thought?". The most pertinent answer is from /u/PapiriusCursor with a massive throbbing 1,993 karma points, but there are also valuable contributions from /u/0x52-0x48 , /u/DrCaptainFantastic , QuintusSertorius , and others. (And I greatly enjoyed the stickied "all" warning by commiespaceinvader -- it's small but perfectly formed.)

There is this other previous discussion, though of smaller value after reading the above. "Why do Greco-Roman sculptures of men have such small penises?" by Ragleur.