acid free paper for storing bags?

Hi just wondering since so many people on TPF recommended to store bags in acid free paper, wonder what's the benefit of it and what happen if you used normal paper? I used a stuffing paper / stuffed paper for package and usually just put them inside the bag and now wondering if it's going to

Small Acid-Free Preservation Kit - 18” x 12” x 3 1/2” - Foster-Stephens inc.

Archival Storage Folders and Enclosures

offset black acid free FSC paper white reusable drawstring storage shopping packaging gift bags for clothes

Kreinik Acid Free Tissue Paper, 20 x 30, 12/pkg

Seasonal Storage – The Lady's Maid

Tissue Paper White Acid Free - 18 x 28 / 450mm x 700mm - Pack of

Crystal Clear：These transparent airtight bags are suitable for protecting and storing your artwork, photos, cards and so on, clearly showing the charm

200 Pack Acid-Free Crystal Clear Sleeve Storage Bags Photo Print 8 3/8 x 10 1/8

Archival Definitions: Acid Free, Buffered

Crown Display 120 Count of Acid Free Tissue Paper for Gift and Crafts 15 x 20 - Emerald Green

Perfect for safely storing quilts, fabrics and clothing. Clear top, transparant sides from Innovative Home Creations. Dimension: 25 x 21 x 11.

Acid Free Storage Bag - 25 x 21 x 11 - Innovative Home Creations - Set of 3 Bags

USPak Sohler Natural Kraft Stand up Pouches with Window and Zip Lock Food Storage Bag, Pack of 100 (M, 100-Pack)

Paper Grocery Bags - 12 x 7 x 14, 1/7 Barrel, Flat Handle, Kraft S-18691 - Uline

Handbag Stuffing with Acid Free Tissue Paper

Tissue Paper White Acid Free - 18 x 28 / 450mm x 700mm - Pack of