My 3 qt. crock pot is about 30 years old also. I just said to my daughter Carol the other day that I was thinking about getting a new 3 or 4 qt. one to replace it. It is still running but the outside is starting to look pretty ragged. There is even a few rust spots around the outer rim. I also have a 5 qt. for larger items.
I also want to welcome you. I know you will like it here.