I dont think people will completely stop indoor. I know i wont. I like indoor more than any greenhouse/outdoor ive ever had. Ive had a lot of both!
I'd love to stop indoor and grow only out.
Unfortunately, at 52°N none of the sativas I grow would be anywhere near finishing. At best, perhaps, I might get away with a heated greenhouse with an augmented light schedule. And it would be nice to get the damn spare room back.
Strong case for a second place somewhere down South.