vague memories of few DS9 season 1s I saw were that it was tonally dark, with angry characters and iffy make-up, and - let's face it - basically a Western in space (not a genre that hugely appealed). Voyager was, and is, just lighter, frothier fun. And they had a spaceship.
Of course, I've seen the light with DS9 since
. But VOY will always be first love.