I find the cultural difference regarding finals pretty interesting. Most Australians (and Americans i guess but they're on another level with ridiculous 7 game series) don't consider a competition won unless you can do it under the pressure of sudden death finals. Most English prefer first past the post.
Any country whose stick and ball sport's games can last up to 5 days has no right to judge us on our best of 7 series concept.
Joking aside, I believe the cultural differences are down to the vacuum our sports exist in, compared to the one major sports league in England. In our respective countries, regardless of the sport, these competitions are the only ones to compete in, and a round robin competition with to playoffs would get boring quick for most fans as their teams have nothing to play for.
I'm a Baltimore Orioles fan, and it became clear a few weeks ago we weren't going to have the best record in the AL or probably win our division, but it was still intense with the Os competiting against the Blue Jays and Tigers (plus yankees, mariners, and astros) for the 2 wild cards spots all the way till the last day. Under a round robin format all those games would have been meaningless, as there was nothing to play for.
It works for the EPL, because teams aren't just competing for the title, but theyre competing for the CL group spots, the CL playoff spot, and europa league. So even if say ManCity is running away with the title, there are still reasons to watch the other matches, as those races are their version of the playoff race.
Of course, what the 'LLS is the true champion' crowd fail to acknowledge/recognize is for the majority of rugby league's history in england the champion has been decided by playoffs. By all means go back to the era when it wasn't by playoffs, just don't expect the Sky money to follow, and when you're (in the general sense) wondering why your sport is dead at the professional level with all the players abandoning ship for the NRL or Union paychecks, at least you can say the amateur team you support won the round robin league.