We are made aware so that we don't react by feelings but to reality on the instruments which according to you is almost impossible.
Hi vilas, Next time you have the chance, try flying the sim with the motion off. If you can fly it initially as smoothly and accurately as you can with the normal motion on - then I'll be impressed.
We get used to the sensation of pitch from pressure in our back and butt which agree with the ADI. In the real world, with an unexpected acceleration from full TOGA power and a light aircraft - then there can be a sensation / visual mismatch which can cause confusion.