If anything, in the past I have been guilty of the opposite. I used a Thermaltake Tsunami Dream through 3 builds and 9 years. It was a great case, and there were no huge "advancements" in cases in that time (at least to me).
With my recent build I went with the Thermaltake View 71 RGB, but it's quite the step up and the Tsunami Dream was just starting to feel worse for the wear, though it still looked great.