I think that most things have already been covered.
My opinion of, say, Lightening Racer at Hershy is skewed because it was so much fun me and Jerry racing the two kids. While the ride is certainly good, the interaction and "fun" it generates far outclasses a lot of much better rides.
If I was on my own? I'd have a very different view (probably much more realistic).
I think that wood especially though suffers from "good and bad days". I rode Phoenix at Knoebels in the wet. For most woodies, it should have been shifting like Thorpe fan boys to a new MTDP. However, it was pretty bad... Well, I may stretch to mediocre - but the worst thing? I couldn't even see how it could be good. Often you can see "potential", but here nothing.
Yet this is one of THE highest rated wooden coasters in the world. Even Jerry admitted the ride we had was awful, and he was pretty sad about the fact we didn't get a good run.
I've also known Nemesis run very slowly and be pretty dull early in the day, but by the evening, it's making your legs wobble. So steel coasters certainly get it too.
Good days and bad days. A bad day, is a bad day for everyone - even fanboys, but a fanboy has the memory and experience of their "superb rides" to bolster their bad ride.
It's why Grand National saddened me so. My ride in 2006 (new trains) was utterly gobsmacking. My ride in 2008 and just an exercise in sheer pain. There was such a huge difference in ride quality. Previously, I'd always had at least a "fun run" on the nash at worst.
The point? Erm, no idea.
Just that socially, we can feed on the buzz and excitement of each other. Likewise, we can also feed on the despondency. A bad day for a coaster is a bad day, and it will always get tarred due to it if a lot ride it that day.
Few things though.
1. A ride like Th13teen (to touch briefly on the Robb thing). As a ride, it's never going to be more or less than what it is. It's not like Nemesis having a slow day, it's a family coaster and will never excel in terms of "great coaster design". The enjoyment comes from how much you enjoy the elements of the ride. Some people love the inside drop (Madame_Furie and SSIL_Furie both adore the ride for this), others the backwards section, some people the woodland trip. Hex is, after all, just another Haunted Swing...
2. Everyone is different. Different heights, weights, ear pressure, fears, adrenaline levels, etc. Like Tim, it takes a lot for a coaster to scare me now. Without that fear, you have to look on the fun the coaster gives. Although riding Nemesis rarely means it often give me a good adrenaline rush. However, everyone is going to get something different.
When we went to Sweden in 2007, Balder was the big thing. Out of the whole group of Liesberg n00bs, only Leighton got something out of the ride. He re-rode it again and again on his own - he adored it. I think Loefet was polite in his disbelief we weren't all quite so blown away (yet were the following day with Thunder Coaster). Now, I think we all considered Balder a good coaster, we all really enjoyed it, and we re-rode it a lot (so it can't be terrible, I think we did Kanonen twice :lol: ). Was it group mentality meaning we didn't get blown away? Leighton wasn't part of it though. It's odd, and can only assume that there is something in some people Balder just hits the spot with. For the rest of us, it either wasn't meeting expectations (the dreaded over-hype), or it just wan't pushing our buttons. I think it was possibly a mix of the two, but I know exactly why it didn't push my buttons, yet why similar coasters (Boulder Dash and El Toro say) do.
So here, possibly experience comes into play to a degree. A tiredness of riding coasters and needing a coaster to eek out a particular feeling.
3. As long as we understand and are realistic - it's not a problem. If you know why something works for you, then it works for you. Th13teen is never going to be a brilliant coaster. As a crowd pleaser and "something a bit different" - it works, but only if you like that kind of thing.
Point is, nobody is right. Nobody has the right to force their opinion on anyone. As long as you keep in the realms of realism and understand why you enjoy/hate something, then the opinion is fine and justified.