I have never smoked or indulged in alcohol, and have justified my sewing by this. Although, my DH says it may be cheaper if I did!!! I have been a sew-a -holic all my life and sewing has really been my sanity many times. There have also been many times when I could not have afforded to buy any fabric. We have worked hard, raised a family, helped them financially, our bills are paid on time, my pantry always stocked, so I have no guilt in buying fabric to make quilts and projects I love. I really shudder to think how many $$$'s spent I have in my sewing room.
After all, in this life we can only live, so I say live it to the best you can for we can't take anything out of this world when out time comes. We are only custodians of all we acquire, so we are paying dear rent for it all. That's my view on this subject.