few reasons
1. the most obvious being even in 2022 some movies can simply only be viewed on VHS. take for example the ebay listing I posted in this very thread for 555. I haven't been able to find a stream for that flick anywhere. I will agree that with streaming this has become much less of a problem, but still some movies can only be found on VHS
2. some movies look better on VHS. I know this might sound absurd, but lots of 70s and 80s low budget flicks actually look worse at higher resolution/cleaner image. take for example Rawhead Rex.
I recently rewatched this on Shudder streaming. it was objectively a worse experience because the costume looked crappy at the higher resolution.
3. there is something comforting about watching films on VHS. the experience of browsing through your VHS library, grabbing a tape, sticking it in the VCR, and watching it in all its grainy beauty feels like a warm hug, reminiscent of my childhood where I would spend hours in the local movie rental store. the whole process of watching a flick on VHS, from admiring the amazing cover art to just finding joy in using something like a VCR in 2022, is just really special. to be fair, I'm fairly nostalgic about old tech in general. I still use several computers that are +20 years old, mp3 players that are +20 years old, etc. old tech is comforting for me.
there is nothing quite like VHS/beta tapes.