I have so much old and new fabric - actually now I am getting rid of the fabric I haven't touched in 2 years. I use what works - never cared about the age. If the fabric is truly weak I would throw it away. I have a piece of Disney's 3 Little Pigs fabric that my mom used back in 1952 which is still very strong and I have been putting a piece of it in all the quilts I make for the great grand kids. (My mom told me to find the fabric before she died in 2009 and asked me to use it somehow since my niece was expecting twins at the time.) Lately I have slowed in my quilting because my daughter had my grandson in 12/2020 and I watched him full time until August when he started day care. In 2 weeks we will have our first granddaughter and I will be watching her until she is old enough for day care with her brother. (I am so excited!). But they keep me busy so quilting has been difficult. And lets face it - buying new fabric is fun, so...... I am keeping the majority of my Christmas & Halloween fabrics - I LOVE making seasonal quilts. And I have taken it off the comic book cardboards. It was just too hard to keep up with it all.