Why is pineapple juice always sold in a can?

It's not "only" in cans, but I can tell you from experience only the "best" is in cans. Dole, the largest producer of pineApple juice, choose cans because pineApple can be affected by light, and canning gives it a longer shelf life. Since it's not the most popular of "drinking" juices, longevity plays a big role in deciding the best package. Please recycle. - Hermione