[Mondial]

Its the nature of the beast. All digital scopes store the trace as sequence of discrete voltage levels so you get the steps in the trace. If the A/D converter uses more bits for the conversion, the steps get smaller but are always there (quantization error). The raster scan display also contributes as there are a fixed number of pixels available horizontally so you have to display points on the screen in discrete steps. I guess the "bumpy" traces don't bother younger users as they are used to the digital type of display.

Personally, I love the clean waveform display of a good analog scope. I will continue using my older Tek scopes. The ones from the 60's and 70's are my favorites for trace image quality.