The big deal is that bittersweet chocolate has a higher percentage of cocoa solids than semi-sweet chocolate, which means it has a more intense, rich flavor. Imagine you're at a coffee shop, and you order a bittersweet chocolate muffin - the flavor will be deeper and more complex than if you had ordered a semi-sweet chocolate muffin. It's like the difference between a fine wine and a cheap beer - both might get the job done, but one is definitely more satisfying.
Now, you might be thinking, "But I'm not a chocolate expert, I just like to eat it!" And that's totally fine - the point is, bittersweet chocolate is worth trying, even if you're not a chocolate connoisseur. Think of it like trying a new restaurant - you might discover a new favorite dish, and in this case, a new favorite type of chocolate.
