I do miss Charley and it was nice having two dogs, so I'm thinking of getting another puppy. However, every Cocker I have had has had health problems. My first black Cocker developed a liver condition and had to be put to sleep at four years of age. My next Golden Cocker Spaniel, Benjie, had a few problems: ears, vestibular disease, joint issues and a heart murmur, and was just over sixteen when he was put to sleep. Charley had health problems from when he was six months old. The main problem was when he was diagnosed with dry eye at six months. He also had ear problems, tummy troubles, malignant melanoma, and heart murmur. His dementia was due to old age, and I wouldn't suggest that was a Cocker problem.
Now I have Henry, and I was congratulating myself that I no longer had to spend untold hours at vets, and having to constantly medicate. Henry was just past his second birthday when he had his first seizure and was diagnosed with Epilepsy. He is on medication twelve hourly. Then he was diagnosed with Pancreatitis and is on a virtually fat free diet. So I have to continually monitor his diet.
I love Cockers, bit I'm not sure that I could cope with another dog with health issues.