I like mine. I work remotely, so for the first time, having 3 different timezones on my watch is genuinely useful. It also means that my giganto phone can stay on my desk while I'm around the house and I can still see messages/answer calls. The fitness tracker is pretty nice - the waterproofness of the latest one is very appealing, and I may upgrade at some point.
On the downside, it does feel very extravagant for something that is really just icing on a cake - on a plane trip for business recently I realised quite how much tech I was turfing out into the security basket, and it added up to over 2k just in laptop, watch, phone and ipad - it sobered me up a bit and made me hold onto my bag just that bit tighter.
The second thing is, I've got the 'Watch' my DP has the sport version, and his is noticeably lighter enough that I slightly regret mine, except that I'm very impressed with the sapphire glass on mine - I'm very, very clumsy and it's survived 18months of daily wear (and weekly dropping, scraping, dumping in gym bag) without a scratch