It can't hurt to get it inspected. But I doubt you'll need to replace electrical wire in your house that is only 50 years old.
I changed out some wire that was 80 years old and the insulation on the wire was basically in good shape. I just replaced it because it wasn't grounded.
Your wire should be grounded but if it's not then that would be a reason to upgrade your wring. The copper wire itself can last over 100 years. It's the insulation that usually breaks down over time. But at 50 years I'm sure your electrical wire is okay.