Look. OP bought high watt device. It is uncomfortable at high watts with the tanks that he uses. Asks why the extra watts are there. The answer is that they are there for people building devices that work with the extra watts. That is the point of the watts. They let builders choose to do more complicated things. Whether or not these builds are wasteful of juice, or the clouds are not important to enjoy vaping, or multi-coil takes longer to build than single coil, or RDAs are not as fun as RTAs, or anything else is irrelevant. That was not the question.