I still haven't used it, even though I've thought about it, primarily for two reasons:
First, I use a Discover card a majority of the time, and I see they STILL aren't working with Samsung Pay yet.
Second, I hate to end up "that guy" that does something different and ends up holding up a line at a checkout. Amazingly, as long as these types of mobile payments systems have been out, I've still yet to see anyone pay for anything, anywhere, using their phone, which seems mind boggling. Not like I live out in the boondocks, either.