I read your column. It can definitely be more challenging to be social with our circumstances, but it’s certainly possible. The key is to think about the things you’re passionate about.
In college this was easy for me, because there were so many groups to get involved in. These days, I hang out a lot at the comic shop and at comic cons, and I have a group of friends who are podcasters. Church is a great way to meet people as well.
You should also try to connect with other SMA people in your area or other people with disabilities. Posting in online forums and Facebook groups is a good way to find out who is close to you.