When I was in the Explorer I had no radar. Most of the yachts had radar, and if the damn thing quit working they didn't dare get under weigh. If they ever had any navigational skills they lost them when they installed radar.
I could go anywhere with a good set of charts, a good timepiece, a set of parallel rules, and a speed curve for the boat.

However, now I don't have, and never had the ability to find my way around a strange city in the dark, and that GPS is a Godsend. If it quits working, I'm back where I was and no worse off.

It all depends on your particular need. Obviously, Mick's need is different from mine, and it all boils down to a matter of opinion.