What do you like about mountain?

I love being in nature. Especially, mountaineering.
I'm wondering what do you like about mountaineering?
(What do you not like about....)
ややフォーマルに
Why do you find mountaineering to be interesting?
What's so good about mountaineering as sports or nature?
gazing at the beautiful night sky.
I see...Is there anything you don't like about mountaineering?