I download from Netflix or iTunes

I have found more videos are download then DVD , or blue ray. I don't see the vast quality difference in blue ray to make the purchase.. I like that on a disk I can have episodes of a tv series playnfor hours where on download it is one episode by one. I work nights and old familure friends make great wite noise to block out traffic and law mowers. So no I won't be giving up my DVDs I just have slowed my library to just the special ones..