I switched to streaming three or four years ago and don't regret it, but the catalogs are still full of holes. Recently I wanted to rewatch some old shounen - it wasn't on Kinopoisk, wasn't on Crunchyroll either. Googling led me to some sketchy site packed with ads, and I figured it's not worth the hassle. Now when that happens I just look for different anime instead - life's too short to hunt down one specific title.
But the series that are on official platforms, I watch those more willingly: no need to wait for downloads, no need to hunt for decent subtitles. On streaming it's usually solid, video quality is stable. Plus, if I liked some anime, I'm more likely to come back to it - unlike torrents, where files are gone after six months anyway.
I think for popular and mid-tier titles, streaming has basically killed torrents. But niche stuff - old OVAs, spinoffs with a third-rate budget, or something that only came out in certain countries - that's still a black hole. In my opinion, that's the services' problem, not the people looking for unofficial sources.