Well, I'm from Liverpool. I was a kid in the 90s and Gazza was my favourite player, he's the reason I followed Lazio and Italian football through the 90s, and then he went to Rangers. So I started following Rangers and Scottish football in the 90s too.
I was never a Rangers "fan", but I never had an axe to grind against Rangers either.
Then I moved to Scotland about six years ago and Ibrox was actually the first club I wanted to visit. I remember getting off the subway and couldn't believe that Ibrox was practically there, it must be the easiest stadium to travel to, very similar in respects to San Siro. Get train, get subway, then a short walk to stadium.
The best experience of Ibrox was actually walking upto the stadium and seeing Gazza and McCoist on the facade of the stadium. You do get the feel that it's a big club with lots of history. Which of course it is.
Cut a long story short, I also went to Easter Road, Alloa, Tynecastle, Stirling, Pittodrie, Celitc Park stadiums, sitting in the home end of all of them. And the worst experience is Ibrox. And the worst and unfriendliest fans are by far and away Rangers fans. Not all of them of course, but there just seems to be an overwhelming lot.
Rangers fans I now associate with the very worst kopites, and it's amazing the amount of Rangers fans that support Liverpool up here. But they also have a weird English hooligan vibe about them that also makes me associate them with the likes of the worst Millwall and Chelsea fans.