What really confuses me is the expectation that they should never change. Doing so is essentially seen as an act of blasphemy.
These people will say "But amendment XYZ says this!!", but the second anybody wants to amend it again, they lose their bloody minds.
Sometimes I want the country I live in to have an actual codified constitution, but other times I look over to the US and I'm wary of that "constitution cult" mentality spreading...