This thread got derailed by a few arguing over US laws. Guys there are many of us who do not live in the USA.
In Australia you can fly to the max height if you are not in controlled airspace, however other rules do apply about how close you can fly to a building or that you cannot fly over crowded places like beaches.
If I am flying in Taipei City there is a 60m max height limit, around 195' and there are places in the city you cannot fly. However I often get people claiming I will hit an aircraft at 10000'. Really? There are no aircraft allowed to fly where I live. So lets say you could climb a mountain to 10000' where aircraft did not fly? Would you fly there. Obviously like the grand canyon you can launch from a mountain and be several thousand feet above the valley floor. That's part of the beauty of being able to fly. I took some photos to get printed. The shop owner knows the area as it's quite famous for tourists. He says wow, I've never seen someone to get these photo's like I have. I explained I flew my drone from near 9500' altitude and maxed out over 11000' with my drone over the Yushan National Park. ( Yeah we can fly National Parks here

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So as I fly where there are no people underneath, no passenger aircraft allowed in the area, and have stunning scenery to photo and video and have laws that allow me to do so I feel quite privileged. I flown 100 miles in the last 6 weeks with around 17 hours of flying time on the drone. I use an Argtek Antenna on my P3S and Argtek now use my distance video on their you tube channel. 12930' distance and 30000' mileage.
Enjoy your flying.