You will get many opinions none are right or wrong. Personally, we don't use it because it's just not the way we eat. We normally eat at a TS every day but I might get a couple of appetizers instead of meal because I'm not a big meal eater. Both my adult son and I enjoy a refreshing adult beverage or two with a meal, it's not included. There are days when we will just snack all day or share a QS meal or just do whatever. We don't plan ahead and have never had a problem finding an ADR day of, by the way. It isn't about money for us, it's just about how we like to eat. Also, keep in mind you will be there during food and wine at Epcot and chances are at least one of nor more of your meals might come from the booths.
Just as an aside, I just don't like the whole can I trade a QS for this or can I trade 3 snacks for that or can I count a drink as a dessert, issue. Too much thinking for me on vacation and I don't like having to be tied to that.