It might be distasteful, but I'm not sure why items of that nature should never be sold.
As you know, I've been selling on eBay for years, and the list of items I can no longer sell keeps getting bigger and bigger:
No ivory, even antique ivory
No toy cap guns
No WWII German memorabilia
The site has become increasingly politicized. For example, they have a very strict policy on toy cap guns, but even if you comply with it, hordes of liberal activists complain about the listing and the managers pull it anyway. The same with anything made of ivory.
Unfortunately, there is no better site out there for selling antiques and collectibles. Plus, I have to admit eBay made me rich, so although I have a love/hate relationship with them, I also acknowledge they provided a vehicle for me to become financially independent for the rest of my life. So I take the good with the bad. It's not unlike being a Republican.