Also, many of us are here for social disorders, social anxiety, or disorders that involve some level of anxiety over socializing. Therefore, it can be hard for some of us to reply even if we know what we want to say.

I second guess myself a lot. I'll type up a nice, long reply and then chicken out and never post it. It gets easier with time. But you still have to keep this in mind. That a lot of people aren't posting for these reasons despite being able to understand.