You do realize the “is it WORTH buying” question requires consideration of one’s disposable income, or what would be the next thing you buy if you don’t spend the hundreds of dollars on an Apple Watch?
The Watch is an accessory to an iPhone, a very useful one. But it is no where as versatile as the phone itself in terms of functionality. In other words, the Watch’s usefulness per dollar is much lower than that of the iPhone.
I value mine the most as a remote screen of my phone where I can monitor messages or reminders without pulling out my phone, particularly when I am with someone else or in a meeting.
I am blessed with a good job that pays well, so $ isn’t a big factor in this case for me. But if it is, I wouldn’t give up my lunch money to buy one.