It's my planet, too, and I do not apologize for being a human!
Please understand that population numbers for mountain lions are not shrinking, they're growing. This is in spite of the expansion of urban areas and the expansion of the human population.
If you get mauled by a mountain lion, you're either dead and eaten or disfigured and disabled. If you are comfortable with that, fine. I am not.
I do not think that others should force an agenda of mountain lions' rights to life as being superior to humans' rights to life.
Prop. 117, which outlawed mountain lion hunting in California, was passed in 1990. It designated the mountain lion as a 'specially protected species.' Hence, if you kill a mountain lion, even in self defense, you're gonna have some 'splainin' to do. Prop. 117 is part of the anti-human agenda that many in our country and in our state are pursuing.
I should add that I have no desire to go hunting--deer, lion, bear, or anything.
I urge you to take some time and check out this link:
http://users.frii.com/mytymyk/lions/intro.htm#confirmed
It contains info about lion populations and mountain lion attacks on humans.
Having idealistic, romantic feelings about the importance of mountain lions sounds great and noble when you're sitting around with your friends at home, waxing poetic and philosophical. When you're in a lion's line of sight, it's a different story.