Hydrotherapy is a better method of exercise to minimize long term joint pain

an article published in PT january issue said that the short term effect of hydrotherapy and/or exercise are equally good for short-term knee pain. but in the long run, which many patients should consider, hydrotherapy is more helpful. the reason is because it is not weight bearing as the water support most of the body weight. Therefore, there's less stress on joints.
however, what the article didn't emphasize is that although we choose something for shorterm, it is sometimes more important to start off with something that we can stick to in the long term. After all, if problems exist in the first place, it'll most likely to happen if we don't take care of it.
secondly, the words "everything in moderation" and "variety" is very important. Injury happen when people do repetitive motions. If we do variety of activities, thus each activity we do will be less, enjoyment increases, chances of boredom decreases, and our ability to stick to it will also increase.