Oh boy, you're in for it now. Apparently it is not gross. Apparently sitting in or walking through or ingesting the cremated remains of another person not only is not gross, it is not bad for you at all, and many people don't care that you are offended because they know for sure it's OK.
Your feelings in this matter are irrelevant. My feelings in this matter don't matter either, for the record. So, human remains in cremated form will rain down from the heavens onto your Dole whip and you will like it. You will sit in the cremated remains of a human being on the benches of Epcot and not know the difference.
I don't know how these people would feel about ingesting the cremated remains of a cockroach colony (thousands of 'em just spread into your cereal) but apparently this presents no problem whatsoever because, of course, cremation burns off any ickiness that cockroaches carry with them
Enjoy.