When we turned 65, it was a really nice feeling to know I wouldn't lose medical if I got fired. Plus my premiums went down by about $40 a month for the two of us. Same coverage, same doctors, same hospitals.
Fortunately, my wife and I are only two months apart in age.
Protip: get the optional part d coverage even if you don't currently need expensive drugs because signing up later is stupidly expensive.