I was working outside around my main, single ground rod and noticed it was a bit wiggly. Closer inspection shows that what appears to be a 12-18” piece of rebar was used as a grounding rod.

Now, I haven’t noticed any issues in the house, but I’m also not sure what to look for. What problems could a bad grounding rod cause? I can be lazy about replacement and borrow a driver from a friend and get a new one installed in a few months, but should I prioritize this more? Again, I don’t know what the dangers are so not sure how fast I should act. It’s been fine for 30 years the way it is (I assume), but I do want to make it right.