Interesting to see different points of view -NP it seems some do find it useful so you could consider putting them on.
I think it might be useful for me to expand on my reasons for disregarding that kind of thing.
BlueChampagne is right, a good selector is looking for a person's ability to fit into the office dynamic, or add to it.
However I would be concerned if I thought a manager I was working with was deciding on 'ability to fit in' without meeting someone, and basing that decision on exciting hobbies. Climbing mountains does not indicate personality.
A couple of scenarios to think about;
Scenario A - two candidates both have right qualifications, skills, experience for job, both climb mountains in spare time, one puts it in, one decides it's not relevant to the job and doesn't put it, preferring to keep cv to 2 sides of relevant stuff. Second candidate' personality traits would actually add more to the team, but they don't get a chance to show that because they didn't get an interview.
Scenario B - two candidates both have right skills etc, one puts climb mountains, one puts reading/cinema. First candidate is selected for interview. Turns out that second candidate who didn't get an interview is disabled....
See what I mean?! Just something to think about...