Much like Jackdale, I use the GPS for it's ETE function, I like the satisfaction of seeing the miles scroll down as progress is made. I have found it to be remarkably accurate here in BC/WA - including picking our way through our first passage of the LaConner 'Ditch' in the dark - but we did have radar as a backup.
However we always keep paper charts at hand too. If we had a large-screen plotter I might not dig out the charts so early.. but I still like to have one at hand for any tight passages.
Most of our sailing is "VFR" - we can usually 'see' our destination, and are often tacking up a particular shoreline or narrow channel.
We've seen ridiculous errors on plotters in Mexican waters, but I believe their paper charts are no better......
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
1984 Fast/Nicholson 345 "FastForward"