Size
One of the main issues with alien life, is size. If they're not the same size as us, either we will be crushed for being too small or they will be. If we are the same size, just imagine how terrifying a human sized bug can appear.
One of the main issues with alien life, is size. If they're not the same size as us, either we will be crushed for being too small or they will be. If we are the same size, just imagine how terrifying a human sized bug can appear.