That is, if you feel it affects significantly.

From what I have experienced, the vast majority of Hellenists arrived to the religion from one of three ways (or a combination therefore). Either from an upbringing of an Abrahamic faith, from Wicca and/or other form of paganism, or from an atheist/religious background.

Do you feel, however you can to Hellenism, your past affects the type of Hellenist you are today?

I do think, for me anyway, I was affected. I grow up non-religious/atheist and came to Hellenism simply through my passion to learn about ancient/classical Greek culture, religion, and history from a historical/academic/scholarly perspective. I believe it's one of the reasons why my methods of praxis veer much closer to reconstructionism than anything else. And perhaps from my atheist background, or perhaps it's just me, that I don't experience nor put much stock into UPG.

What about y'all?