No. It isn't sad at all. This class of ship was designed around 60 years ago.
The entire class had a long and illustrious history of service starting when they were manned and operated by British India on behalf of HMG. After only a few years service they were transferred into the RFA fleet and became probably the hardest worked ships in the RFA, serving all 3 Services. It's probably a testament to their design and the TLC given to them by the RFA that the class has lasted so long. But as with all things they became outmoded. "Percivale" in particular played a pivotal role for a period of 2 years monitoring the French nuclear weapons testing in the Pacific. The ships themselves were really waterborne trucks....and very uncomfortable for our "passengers". (I wrote at length about this class of ship under the "Nautical But True" banner ages ago).
Don't be sad. A couple of them are still soldiering on under another flag, perhaps for another 10 years or so. Good memories. BY.