About y coordinate 0(0m above sea level)

This is a suggestion for y coordinates.Now, the y coordinate is 0 deep underground, but it is very difficult to understand and it is far from reality.My suggestion is that y coordinate 0 is set at 64 (0 m above sea level), the boundary between the current ground and the basement.By doing so, I think you can play Minecraft, which is close to reality.Thank you for your consideration.