I do not leave my anxieties as an excuse not to socialize.

See, that makes all the difference, in my opinion. I have no pity for those who don't even try. I will not help those not willing to help themselves.

If I see someone looking awkward, but still trying to be engaged in their surroundings, I'm more than happy to come over and introduce them to a few people and kick them into the conversation. But if you close yourself off and expect someone to come to you, I won't expend the effort, you know?