Safety first: brake fluid

I know most people think that the brake fluid flush (replacement) it is just another way for the mechanic to make more money off of you. Or is it? this picture explains better than anything else why the manufacturers recommends to replace the brake fluid every years. Brake fluid is a moisture absorbing fluid, and even if it doesn’t look like the one in the picture, could still have water in it, which will lower the boiling point and if the brakes are heated, traffic, going down hills, mountains, the brake fluid could boil and lock up the brakes, possible causing accidents and more damage. Please don’t overlook this aspect. SAFETY FIRST !!!!!!