You aren't missing out on much. The frappuccinos are good (tasting, but bad for you) though. Their refresher drinks (they’re mostly different flavored lemonades that have fruit in them, but there are other fruit drinks) and a few of the cold brew coffees are good too.
Out of the coffee chains I’ve been to, Tim Hortons is my favorite. They’re mostly a Canadian thing, but they made it to 11 states. None of them are in my state though… If I’m traveling and see a Tim Hortons, I’m probably stopping by. They have fewer coffee options than Starbucks but I think their coffee tastes better. Their smoothies and food are good too.