Automation to keep the wife happy... now that's worth it right there.
Yea, I have mine set up for the Car/Home/Work. I am considering keeping one on my wallet for nights out. I had written up something a while back about NFC and using it. I actually recently added 2 tags to my laundry room. I figured out the time cycles for the washer/dryer (shared machine, one on each floor) so I tap my phone to the tag, it sets an alarm and reminds me to get my clothes.