Yeah, that's it. Primarily, I was never exposed to it first hand. It was alien and the gap seemed to be class. I grew up in Tallaght in the 80's when the gap between there and Leinster Rugby was a chasm. Opposite ends of the spectrum and famously so. So it was very hard to be fully objective in such an obvious them/us situation.
Also I'm not a nationalist or patriot, I have a closer affiliation to the soccer team than any other sports because I was practically reared by the DDSL. In most sports I will support Ireland of course but I'm more defined by my class than by my nationality by a good distance. So the formative feelings for Rugby remain though now, even in Dublin that is much less the case. And I live in Sligo where it's even less so because of the Connaught success over the last while.
And France in the 80s were the only ones playing a running game so I've always liked them. It's a mesh of things, but I was still screaming encouragement at the TV v New Zealand. And of course, I would cheer for a representative side from Mars against England in any code, existing or yet to be invented.
I do like the game of Rugby and I went through a major break from being a lifelong United fan for a year or two and watched more Rugby than football, which I thought would never happen, but I watched all of it as neutral, which I rarely do with football, no matter who is playing, Although I'm not sure what that's about.