Why can't you keep cremains at home?

Where can I find the Catholic rationalization for having a proper place of repose for cremated remains? My husband is insisting that he wants me (if he dies before I do), to keep his cremated remains at our home. I know the the reasons, but I need to actually SHOW him. He refuses to take my word for it. Thank you for your help.

The following links should assist you in better understanding the Catholic Church’s teaching on cremation and the proper repose of ashes. If you have any further questions or concerns that are not answered by these links, please contact Catholic Answers directly.

Recommended Reading:
Does the Church allow cremation?

Catholic Burial ground?
What can be done with cremains?
Can I bury my ashes at home?
Is it correct to keep the cremains of a deceased relative in your home?

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