Tried a Negroni for the first time

I absolutely love gin & tonic. I think it’s the absolute best alcoholic drink ever. Because of my love for gin I had to try a Negroni. I find it pretty hard to understand what makes this great. Idk, I think it lacks a little subtlety? It’s just so in your face on the sweet side as well as the bitter side. I find it kinda overbearing and unwholesome. More like something I’d take as a shot than sip as a cocktail. The melting of the ice made the drink a lot better tbf but so far I’m not convinced. Can you tell me what makes a Negroni great and how is the perfect Negroni made in the first place?