Because it ist not worth the effort. A video showing yourself while the rocket is flying straight upwards with no other requirements as pressing the space button? There are people without webcams and other people who don\'t want to show themselves... command pod, SAS, 2x fuel tanks, engine, seperator, tricoupler, 9x fuel tanks, 3x engines -> just stock parts and the design is not most effcient but it works for reaching escape velocity. There is no challenge in here. Look at other challenges and think of something more difficult and creative and the people will try it. For example in this challenge you could demand that no SAS should be used, only boosters or single stage design.