In RL, I live in a condo. I barely know any of the people who live in other units here, despite having lived here the better part of two decades. I could tell you much more about the dear friends I've made in SL who actually live thousands of miles away.
Having been a programmer since my sophomore year in high school (that's thirty-five years), and thus living through the BBS era as well as the Internet, I should be blasé about that, but I'm not. It still amazes me.
Speaking of friends, among the dearest I have (SL or RL) is Cheyenne Palisades. I hope you'll take a look at her blog. She's beautiful, witty, insightful, a very good writer, and a wonderful person.