When the DVD format made its presence felt on the home video industry in 1997, it quickly made the good old VHS seem obsolete. Taking over as the primary format for all home video releases, it was much better quality than its predecessor.
That being said, as the times changed, the demand for high definition releases increased - and that was something that the standard 480p quality of DVDs just couldn't dream of matching. This inevitably led to the introduction of Blu-Rays in 2006 - a new format that allowed audiences to view their favourite films in the stunning quality they were always meant to be viewed in.
Blu-Rays haven't quite dominated the home video landscape in the same fashion as DVDs, hindered on one end by how expensive they are (especially when compared to their DVD counterparts) and on the other by the rise of HD digital and streaming services. That, however, doesn't change the fact that they are still considered an absolute must for die-hard film fans.
With that being said, there are still a ton of fan-favourite films that have yet to make their way onto a Blu-Ray disc which is, quite frankly, nothing short of unbelievable.