I occasionally spend halves, but I spend Ikes all the time. Whenever I'm at a bank asking for loose halves and they say they have large dollars I buy them too. I have never found anything in the large dollars, but I keep buying them because of all the stories I see on here of people getting peace, morgans, and eagles. Since the Ikes don't fit in the coin machines, I spend them.
A couple of times I have had stores/restaurants come close to saying they won't accept the Ikes. I always find that interesting. If any of them do say no, I'll take my business elsewhere. Whenever I hit a drive through, I always pay with Ikes or halves and these cashiers give the most hilarious reactions to them.