Depending on the client the "Like" button is so much more than that. I can 🤦🏼 (like I did your note) or 🤔 or 😊 or 🫂 or any number of other things. I use it to express my feelings on something I don't think warrant a full reply. I zap a fair amount, but I don't think every note I want to acknowledge deserves sats.