What can one say about mountaineering?
You go and walk for miles, sometimes through the grass and sometimes through snow. Sometimes you're enjoying the deep shades of the forest and other times you're walking in the rain for ten hours.
Why mountaineering you ask?
I guess nobody can really answer that completely, but...
...there is something in the smell of the forest air, the scenery of the mountain trail, the view from the top of a mountain is always breathtaking and the inner peace you find after a hard climb is simply indescribable.
I can show you millions of pictures but it will still not fully describe the feeling of actually standing there, looking at the wonders of nature with your own eyes, feeling the cold breeze on your face and breathing in all that fresh air into your lungs.
Whenever you need inspiration, simply walk into your nearest forest and climb something ;)