Maybe I'm just addicted to adrenaline/stress
Maybe you are! Do you have limitations to your wild side? Looking at death in the face kind of helps build up courage to deal with domestic life, I reckon :)
There are too many people in the world today that are rapped in cotton wool and these people constantly tell us how stupid we are for challenging ourselves! "Man" does it burn off excess energy ,but!!! :D
As our body gets older and our mind stays energetic, the extreme sports get harder and it hurts more. The downfall of such energetic behaviour is coming down from that emotional high (like taking ecstasy) and having to come back to the real world. As we get older, our minds collect more fears (skeletons in the closet stuff) and our minds can't focus on the pleasure at hand "so much" and we start making mistakes, due to lack of focus. Then also, the coming down from that emotional high becomes bigger a fall again, which in turn can cause us more unwanted anxiety. It's not the "rush" that causes you grief, but the coming down from it that you need to look at. So by controlling the amount of activity or level of fear factor, you could be able to find a happy medium between pleasure and pain, per se' to protect both body and mind... Or you could become a Buddhist priest and meditate your life away :D
If you live your life too safely, you give yourself more fears, because you are not able to reach your full potential and then you could become miserable.
Good for you Nellie, I do love to live on the wild side of life!!! However I have learnt the hard way that there is a balance between too much and not enough. The key I guess is balance!!!