I used to be anime-only. Then I took an arrow to the kn- okay I won't
When I caught up with the anime, I started reading the manga, because I wanted to know what would happen later on. The manga turned out to be amazing imo, and now I've been catching reading the manga as well (from scratch, although I'm up to date with the current chapters). So I fell in love with the anime first.
Right now, when I read certain scenes in the manga, I already have ideas about which music they would use in those scenes and I usually can't wait for them to be realised! A recent one: Luffy vs Kaido was animated pretty epically, and I was looking forward to that so much! So if anything, the manga hypes me up for the anime. Pacing and some animations are the only issues in the anime for me, and I think One Pace solves the pacing issue quite a bit.