I am no expert, but judging by how early Christians treated their wealth there may be a corrupting influence of sin. Throughout the Gospel the wealthy are condemned like Luke 16:19-31 with Lazarus and the rich man, and likewise in the acts. specifically how the Apostles and disciples sold all they had and shared their wealth, or when Ananias and his wife were struck dead for keeping some wealth to themselves. The mysteries of the rosary speak of mortification of pride, flesh and wealth.
Many of the early saints did similar things, most notably Saint Pope Gregory the great who abandoned all his vast wealth and had his estate turned into a monastery. Similar to Saint Paula who gave away everything, and became a hermit, a noble woman that had so much wealth that she had dedicated slaves to carry her in a carriage on their backs before her conversion.
While it may not be a sin that requires confession, it is not in anyway connected to sainthood or holiness, rather the rejection of luxury seems to be closer to the life of our Lord and his saints.
With all this in my mind I cannot help feel guilt, and pray for mercy for the luxury in my life. If had to truly be faced with losing what I had, or give it all away I don’t know if I can be as the saints. Lord have mercy.