Taking enjoyment in running of singles and possible risks

This week, I read this article of The Japan Times.

Today, many Japanese people who are single from now onward run for pleasure together. A man said to run is to live and he does not need women anymore, because they will just interfere with his running. Not only adult men, also women from younger to elder have the habitat.

The aims of some people who take part in some marathon are to make friends and have good relationships with other celibate people not only the same sex. A Japanese proverb, “kazu ucha ataru” say fire enough bullets and you are bound to hit something. I agree with it but concerning the purpose based on the saying is imprudent. This article says that some sexless people among Japanese were so rare because they held drinking parties to have sex with a string of one-night not to make friends. It is difficult to understand their thinking for me because it has risks of crimes or injuries. The running for pleasure is nice for the people but the people should be careful for themselves.
I have two questions for you. What do you think about the thought of “kazu uctya ataru” against people’s relationships? As a single woman says running definitely brings her happiness, and love and marriage involve too many risks. Do you agree or disagree with this thought? Why?