In reply to tlm and Jon Stewart:
First of all, thanks for clarifying what the "ethics" meant. I guess I had misunderstood something, or the climbing intro book was not very clear... so it wasn't the environment after all.
Secondly, my story is that I got a spine injury from an accident a couple of years ago and therefore cannot do any sport that involves impact or too much force (I cannot even jog or run, just walk brisk, or "speedwalk").
So, while enjoying my walks, I also started "pushing myself" beyond the limits of the city and hike outdoors, out of pure curiosity. Then, a new friend, who is a professional climbing instructor, took me to a trek in the mountains and ultimately convinced me to climb a few pitches. I felt that was incredibly healthy and, as you all surely know, climbing is like a "full body work out". So I started bouldering indoors more regularly and occasionally do outdoors as well.
In few words, I started to climb mainly to stay fit and healthy
I realize there are many other motivations to climbing, including photography, just enjoying the outdoors, or climbing as an extension to mountaineering/hiking. Or pushing your boundaries.
However, coming from a place of unwanted disability and daily chronic pain, I cannot help thinking that those who truly don't mind risking their life just to set a record in the climbing magazines must be seeing life in the same way as those who don't mind committing suicide; I'd even consider suggesting that those who want to commit suicide should try free soloing first.
Just look at the list of deaths in the free solo climbing article on Wikipedia! Sheer idiots!
In other words: respect life. You might have only one.