Why do you look for accountability buddies here?

Why is it that you look for accountability buddies here instead of picking them from the pool of your know folks?

I will go first

For me, I fear judgement in case I fail, secondly I feel not everyone is fit to be an accountability buddy.

On the flip side I have also become accountability buddies with my girlfriend and it is helping our relationship as well. I am thinking of extending it to my other relationships as well.