What Use Is An F-call?

What use is an F-call? Recently I found myself discussing satellite communications with a group of Amateurs. It dawned on me that I had been using 1 Watt to transmit to geostationary orbit, more than 35,000km away. Compared to a circumnavigation of the earth at 40,000km, that's most of the way there. Yes, I know, there are no obstacles, it's basically focused line of sight, but you don't get ionosphere bounce or ducting either, so I figure, it all balances out in the long run. My point being that this is a QRP broadcast, less than 5 Watts and it gets into orbit, that's quite something if you think about it. I continue to hear amateurs complaining about how little power they have. It's not limited to Foundation Calls, I hear Standard licensees hanging out for their Advanced call so they can use more power and I hear Advanced calls complain that other countries can use a Kilowatt, so why can't we? What's next, a Megawatt, what about a Gigawatt Amateur Radio transmitter? While I completely understand the pul