Originally Posted by
noimagination
I think you used the wrong verb in your post. I've been riding 50 years without a navigation computer, so I doubt you "need" it. I think the word you're looking for is "want".
You may not neeed navigation to ride your bike, but it does open up a lot of possibilities exploring unfamiliar roads, routes and areas. I would highly recommend it.
I use komoot on my phone. But why would you buy a Garmin explore, that is more expensive than a new waterproof phone with a much better screen and much faster processor?