I hate turtles, I did programming for a living, it's work, not fun. If I wanted to type a bucket load of code i'd be making mods, not playing them. Computer craft is like inception, coding within coding within coding, it's horrible and tedious. Turtles may be cheap to make and use materials wise, but they are a headache, and watching walls of text just bores me. After having seen Guude's let's play I can safely say, turtles are never the best answer. There's always a better way, it's just more material intensive. And to be honest i'd rather go branch mining for materials than spend my time debugging a turtle, it's minecraft, not codecraft.