Yes, every 2 years is standard. Use the correct DOT rating by your owner's manual, and bleed by the shop manual. If you don't know what you're doing (like me), then don't do it yourself.
Many people know that overheating can harm brake fluid, but not everyone knows that brake fluid will absorb moisture over time. The corrosion inhibitors stop working, too. Brake fluid is perishable, NOT a lifetime fluid.