Neither had I. Until last July, when my wife gave me an Android smartwatch for my birthday (suck it Apple ... you are not an innovator of smart watches).
Since then, I've worn it every day. I know, what's the big deal about taking your phone out of your pocket.
When your hands are covered with mortar dust, and your phone rings. it's pretty convenient.
When you are expecting a call but want to go swimming, it's pretty nice to have a watch that's waterproof for swimming.
When you are driving down the highway and want to get a picture of something, it's pretty convenient. (Oh wait .. the iWatch doesn't have a camera). And it's not distracted driving when all you have to do point your hand in the general direction, and say 'shoot'.
When you want to shut off that damn alarm about turning off the pool equipment, and your phone is in the house.(Pool timer broke, so I direct wired it until I order another one.)
When you don't have to carry your phone around the house all day in your pocket because if someone calls you, you can answer using your watch.
When you need to set a timer to remind you to check the water boiling for tea, it's pretty convenient to not take the phone out of your pocket.
When you can't find your phone and your watch can set off the ring tone.
Oh .. and it tells the time too.
Notice I didn't say anything about the fitness apps. I used them for awhile, then noticed that they really sucked down the battery. Then I realized that I don't need a watch to tell me how far I've walked today BECAUSE IT JUST ISN'T THAT FREAKIN IMPORTANT! My scale tells me every morning if I'm not exercising enough or eating too much.
Is it worth $300? Depends on how much $300 is worth to you. I didn't think it was worth that much, but my wife felt it would make a great birthday present since I was always looking at it but refused to spend the money. Now that I've used it for 9 months, I'd say it was worth every dime. I've learned to discount anyone that says something isn't worth the money, because they only know whether or not it's worth it to them. And since they have never had one, they have no idea what they are talking about.
If I had an Apple phone, I might buy the iWatch. It's definitely not enough to get me to switch from Android. (Has Apple innovated two windows on their iPads yet??? How about multiple users.) Mine has definitely been worth the $300. Isn't. that's cheaper than the iWatch? And it has a camera. And can use standard watch bands.
But I won't be buying the latest Samsung phone either. Why would I buy a phone that I can't swap out the battery or use an SSD card.
If I wanted that, I'd spend more money and buy an iPhone.