I see routine calls for Amendments by people who would like to "revisit" the Constitution, regularly. I don't think that is the issue.
I see routine calls for a Convention of the States, and a fair number of states have voted to convene one.
If magically I were given the power to rewrite it, I probably would change it significantly, and so would most people. Whether I'd change it for the better is another question of course. And if that power were conferred to someone else, they would alter it differently from me, probably, and therein lies the rub.
Our first Constitution of course failed, so they contrived a second one, which has served us pretty well for 200+ years. As time goes on, perhaps it is reasonable that further changes would be slower in coming. Amendments came in a relative rush initially, and then the process slowed, which could be sensible if you view the process as asymptotic.