Depends on the goal, I think. My job requires me to do aerial survey on land plots. And Spark's flight time is premium (yes, we can only afford Spark at the moment

).
I flew the first flights manually. Free-flight for an aerial survey is just not feasible, too much time wasted trying to figure out whether I've made the right degree of turn, you either ended your flight when you still have more than 50% of the
battery, or you were forced to land because you ran out of the
battery. And there is always a feeling that you're rolling a dice whenever you start your engine. Will the aircraft return safely this time, or will I finally post a 'I lost my drone' thread on this forum?
Now with waypoint, I can design everything before I fly, get the footage that I need, make the most of the
battery, and no longer worry about lost signal.