This is always a fun topic to discuss. I'm really glad we aren't seeing people saying 'I didn't choose reptiles, they chose me' which used to be the cringeful most popular answer when this topic came up on APS, haha.
Despite what many herpers say, almost all humans do have a genetic predisposition to fearing snakes, and it's interesting that it draws a lot of people to them. People usually hate snakes and say they want them dead and don't want to go near them, but in almost every zoo around the world with a reptile house, the reptile house is the most visited exhibit. Pretty interesting.
I'm one of those people who as a very young child just absolutely adored any frog, lizard, snake, turtle insect etc I saw (strangely though, I was terrified of spiders with an all out phobia until something flipped in my head around age 20 and now I quite like them). A lot of people who have that predisposition to loving reptiles and amphibians (love of insects etc are often associated with these people) will talk about the first interaction with them as the time they fell in love, but I think people like us already had that in us and were inevitably going to cross paths with a reptile at some stage and whenever that was, we'd be right into it. So, for those of us like this, I think what got us into reptiles was something innate about ourselves, and those first encounters were what revealed it.
My earliest memory of a herp was a Green Tree Frog on the wall at my grandfather's ex wife's home in far north QLD around my 3rd birthday. It was the most amazing, special and wonderful thing I had ever seen or could have imagined, and I still sort of get that feeling sometimes when looking at reptiles. About 40 years later in March this year I went back to that house, having had no contact with my... 'ex step grandmother' in all that time and not knowing if I'd be welcome or if she'd know who I was, and she rushed out, hugged me almost in tears and told me many stories about that visit when I was a little kid and insisted I stay a few days. The frog wasn't still there but it was fun to check, haha.