I'll tell you why I personally bought the watch. Firstly, I swim a lot (I practice every day for an hour or two) and initially I was rather upset by the lack of smart watches on the market that would be 1. completely waterproof 2. not just be protected from water, but have a swimming mode 3. analyze style swimming, speed, number of strokes, the distance that I swam 4. measure the pulse in a constant mode during the swimming itself (in which the Apple Watch is practically the only one on the 2022 market). With all these functions, the watch copes with a bang! As far as I know, only harmin can measure the pulse while swimming, but it is extremely bulky and masculine and costs much more than the Apple Watch.
For swimming, I use the regular training application (before that I used the free version of SwimPro, but I saw that everything is much more convenient and simple in the native application (unless, of course, you are a professional swimmer).
Of the other positive qualities - the pedometer is very accurate, it does not count hand movements. The heart rate monitor is amazing! Specially compared with medical professional equipment - Apple Watch is on top! In general, a very useful feature for people with heart problems is constant heart rate tracking in different modes - when walking, during sleep, at rest, during training. The watch will also let you know if your resting heart rate goes over 120 bpm.
The design and bracelets are a great function to change the style of the watch and the mood and just when the strap gets bored. Personally, it turned into a disease for me - I constantly stick around on aliexpress in search of new beautiful straps)))
A stunning and interesting Activity system is Apple's non-standard solution, where they approached fitness beautifully and wisely. This is not a stupid pedometer - I walked 10,000 steps and well done. The watch will distinguish your calories burned into total and active - the latter if you burned them through active training or exercise)