Yes normally, spark plugs in good running engines last a very long time and this one wasn't worn at all, just got carbon fouled from leaving the enrichener on too long after starting. When it is under 80 degrees here it just won't idle without it on when starting from a cold engine. It's been that way since brand new. Once warm it idles fine at about 1400rpm. I guess I'll just need to be wary of how long I leave it on. Started noticing it was getting hard to start. At first I thought tight valves, but that starts manifesting itself with hard starting when hot and my issue was with cold starts. Now with the new plug it starts easily.
It's still a huge pain in the a$$ to change such a simple part though.
Never pick a fight with an old man.. If he's too old to fight, he'll just kill you..