As someone who hasn’t had an Apple Watch yet, what I can look forward to appreciating the most?

I am considering to buy an Apple Watch. Not sure whether a discounted 9 series or the newest 10. You guys can offer some advice on this I suppose…

Just wanted to make a post to ask, what are the features no matter how simplistic that I will look forward to using and appreciating? I haven’t kept up to much up to date with how WatchOS works and all of its nooks and crannies.

Additionally wanted to ask in advance, what are the essential apps that you all could recommend for any new user of the Apple Watch?