[spuz]

If you really have to question every action that might end in your death then you would never go outside, put anything in your mouth, go to the bathroom etc. Your question really only makes sense when considering activities that have a relatively high risk of death in which case the answer has to come down to two things. Firstly how risky is this activity? And secondly, how much risk am I willing to take? If you want to answer those questions, I recommend watching Honnold's film on risk as others have pointed out.