OK so brake fluid IS a wear item. It breaks down over time and should be periodically flushed, usually 3-5 year time frame according to your owner's manual. If you let it go long enough, it can gum up in the lines and cause your brakes to stop working. That's more expensive to repair, and of course dangerous
Look in your fluid reservoir under the hood. If the brake fluid is light colored and looks clean, it's fine. If it's dark or cloudy or looks like dirty coking oil, take the car to a mechanic you trust and pay them to do it right.