I'm glad you don't think of yourself as actually "doggiedo"!
I really don't know my neighbors. My husband talks to them sometimes. Most all the people I know I have met through social organizations IRL. It takes effort, but as one T told me one time, "You're not going to meet people sitting at home watching TV"! So, I did manage to drag myself out. I met hubby at a singles' group.
I've also learned that to make friends you have to be a friend. Some folks here might find this statement hard to believe, but I used to be very shy. But I have gotten more self-confidence through therapy and through meeting some folks who actually seem to like me. (Of course, they have good taste!

)
I honestly do think a few people would miss me. But they have had to get to know me first--to even be aware that I exist!

I do suggest that you tell your T some of the thoughts that have been running through your head and about how lonely you have been. I care, doggiedo!