@Sophia I can honestly say I am not that lonely anymore. Sure I sometimes get a bit boredish and I like to talk to people. But you know I see this website as way more than just a support group for lonely people.
For people as lame as me, I think this website is more like a pub, or bar, or cafe. A place where you can come and relax after a long day at work or so. A place to unwind everyday, where the people are actually REAL and caring, and intellectually stimulating.
I dont think that you should leave just because you are not lonely. And I definitely think that you should stay if coming here is something you enjoy, if you like the people here, and if you are lonely.
The truth is partially mental health is achieved by doing the things you enjoy. Especially if they are healthy things, and I can honestly say that meeting people at ALL is healthy. The people here are not abusive and they are generally good people.
But it is also true that every situation is unique and you know what is best for you. So do what is best for you.
But from my life experiences, mental health has always gone hand in hand with social interaction with people who care.