I, like many, found this site because I was looking for support from others going through similar things as myself. Local support groups and such for mental illness/issues are hard to find. So, I joined in here and have found the support I wanted. Sometimes, I'm here for several hours in a day when I am depressed. It's that or bed. Better to try to sit up at least, right?
I have a full life outside of PC as well, but this site has become part of my support system.
Are some people faking/lying? Probably. But would you want to be the one to call someone out on it and be wrong? We don't diagnose on this site, it's not the proper place for that.
We just treat everyone the same when it comes to offering support. Give them the benefit of the doubt. Everyone has their reasons for being here. Sometimes, we just need a friend or two.