Sure SLI can have issues, but the OPs statement seems a bit strong compared to the experience of the majority of people. Only a small number of mainstream games do you have to wait for driver support for SLI to work properly and even then its usually days, couple of weeks tops. So I'm not suprised people who have used SLI for awhile find it a little odd.
Part of the problem is nVidia don't really advertise the stand alone SLI profile updates they do between driver updates - a lot of people don't even seem to know they exist.
Part of the problem is nVidia don't really advertise the stand alone SLI profile updates they do between driver updates - a lot of people don't even seem to know they exist.