Funny, the last two people I know who moved to Hawaii, moved back a year later. I'll have to find out why. But they must have a good reason - this is Iowa, and its currently 16 degrees.
I know people who love it. But it's expensive and it's a long way from anywhere. You either live in a pretty soulless city (Honolulu) or in effectively a beach community of some sort that's often dominated by tourism.
I appreciate why some people are attracted to it but I could easily see it getting old quickly even if living in a condo near a beautiful beach and ocean initially seemed like the perfect life. (OTOH, it's sure better than Florida IMO.)