When do you feel the happiest?

For me, when I finally pull the character I want, LunaSha, from a gacha, I get a huge dopamine rush and feel so happy! When I clear a difficult stage, I shed tears of joy thinking, 'I don't have to see this place anymore.' And when I use Platinum or Legend tickets, just imagining what amazing character I might get makes me feel incredibly good. So, the conclusion is number 3.