
When I first moved into my own home, I got myself a nice set of plastic chopping boards that were color coded to avoid any risk of cross contamination. Then I noticed the slash marks my knife was making in the surface and it gave me a massive ick.
The thought of bacteria embedding itself into those grooves was not paranoia, it was a valid worry. Recent studies show plastic chopping boards harbor more bacteria than non permeable glass, which is why I switched mine to glass and haven’t looked back.