Treasure Untold

Question:

Imagine you serendipitiously happened upon a treasure one day that was more than you can now imagine but you knew it didn't really belong to you. You had a choice, you could enjoy it in the moment and do all the fun things you wanted to do today, but it wouldn't last... OR you could turn it back to be claimed and with trust and faith hope it will return to you and make your future fantastic, WHAT WOULD YOU DO?!

The answer seems so obvious to me, if it doesn't belong to you you need to return it. But obvious answer is just so painfully tough...