It's just you.
Sorry, couldn't resist. I actually like the boring aspects, but I realize that's not for everybody (or pretty much anybody except me). If you've run into some singles then it can't be having the wrong campaign enabled. Another thing you can do is go into the Mission Editor (it's in the main SH3 folder) and look at the RND Layer. This will show you where all the convoys actually are, and allow you to stick to those areas. That should increase your fun immensely.