Is there actually a use case for graphing calculators anymore? Desmos provides a great graphing program for free in a web browser. In any professional capacity you would be using MATLAB, Mathematica, or the scientific Python ecosystem.

I mostly remember playing games on my TI-84 in high school. We used it in class maybe once or twice. None of my college classes allowed graphing calculators on tests, so ironically I had to buy a "dumb" calculator even though I owned the fancy one.