I can try, but I am no philosopher, merely a young and mostly uneducated writer. I would venture to say that as long as said luxury items (or experiences) are created without inflicting pain and/or hardship to somebody else, and you've come to the money by the very same means, then by all means go ahead---with moderation, of course.
At the end of the day I am no lover of luxury goods. I treasure experiences better. But it is in my opinion that it is not the goods themselves but the love of said goods that causes a lot of suffering.
Hope that's a satisfying enough response, Michelle! Much love.