You should not use your workplace as your personal space.
Alex works a lot of overtime at a game development company so is at his desk a lot.
Alex wants to be able to catch up on his hobbies during his breaks.
Alex uses his breaks to connect with others online and keep up to date on developments in his hobbies.
Alex paints minatures during his breaks and splashes paint all over his desk.
Alex is able to organize his hobby time better, so he gets more done when he is home.
Alex is forced to cover the cost to repaint the desk.