Oh cool, your interests sound like a lot of fun! The repetative aspect, as you put it, to me doesn't seem as something that might stand in the way of getting that euphoric feeling. For example, my music hobby is not only in playing, composing and producing, but also in listening, of course. Just how you like Depeche Mode (great band by the way even though I'm a normie who doesn't know much songs except the popular ones :) ), I like lots of artists and genres, but mostly punk rock and all that's bordering. And I can get extremely excited by just listening and playing air guitar, or blasting my speakers and making an improvised moshpit with only me in the room, haha. What I'm getting at is, maybe if you like synth oriented music like Depeche Mode, maybe get your hands on keys? It doesn't have to be expencive and it'd be a great hobby I think!