Yes, we all have baggage and history and all that comes with just existing in the world. To expect that someone wouldn't have that is unreasonable at best, completely deluded at worst.
For someone who is single, and looking within this community, I think it's prudent to attempt some kind of balance when posting. At least be aware of the types of stuff that you are posting and the impression that you may be giving. I think that if someone is interested, there is a pretty good expectation that they will thread stalk you and read back over old posts. Will they see someone who is engaged with the community, having fun, making friends, etc. Or, will they see posts full of drama and angst and desperation?
I doubt that any of us can ever truly know how we are perceived online but I think the important part is that we present ourselves in as honest of a way as we can. Although that does not mean I have to post a picture of what my hair looks like when I first wake up in the morning!