I stopped listening to the Archers on the 60th anniversary and haven't listened since, even though I probably heard most of the first sixty years.
I stopped, not because they killed Nigel Pargiter, but because we had a month of hinting trails on R4 that something really dramatic and different was going to happen. When the day came it was total bathos, just another character killed (they still hadn't fully played out the plot following Sid's death) and we were expected to believe that Pat and Helen knew nothing about pre-eclampsia. I turned off and I haven't listened since.
I do however occasionally dip into this thread and nothing I read here engenders any interest into ever listening again, on the contrary, it confirms that, on the 60th anniversary, I made the right decision.