Definitely my top concerns for watching a movie are that I be able to watch it and hear it with satisfactory clarity.
Standard DVD clarity is satisfactory. If the clarity is beneath tolerable limits--that is, unsatisfactory--I will not watch it. But I will not refuse to watch a movie simply because I cannot watch it--or cannot afford to watch it--in Blu-ray or streamed
HD. Blu-ray, or HD, is preferred, but it is not necessary. Therefore it is a secondary concern.
For me the most convenient and affordable way to watch both Blu-rays and standard DVDs is by having an account with Netflix that allows disks to be mailed to me (Blu-ray disks require a small additional monthly fee). Sometimes I have to stand in line to
wait for a popular new release, but usually within a couple of months the disk is mailed. A stream-only account with Neflix (called Instant Play) is less expensive than having disks mailed, but the selection of available movies is too limited.
Streaming incurs additional expense, though on exceptional occasions I may resort to it. For example, I own nine seasons of Smallville, five in standard DVD, four in Blu-ray. After watching the last episode of Season 9, which was the first part of a two-part
episode, I was too impatient to wait for part 2, which was the first episode of Season 10. So, from amazon, I paid for and streamed the first episode of Season 10. And I streamed it in HD.
I do not engage in illegal streaming.