Like Jim Dixon I am baritone as well, and my range is rather limited. I can't sing in a choir because I don't get to pick either the song or the key. I play guitar well enough to accompany myself and folks seem to like what I do, but I consider myself to be a better songwriter than singer.
As a kid in school we had no formal music program, but for a Christmas concert a school choir would be formed. My mother was a very good singer and one teacher knew that. She thought that I should be able to sing like her and told me that I was singing badly on purpose. I could sing in harmony with my mother but that was due to her ability, not mine. Since then I will only sing solo but I don't take myself too serious. I do have a Hell of a lot of fun with it in any case!