Sorry - don't mean to hi-jack but was really interested in your post linglette. How old is your DS? Has he started school yet? What has your experience been of that if he has? I am interested as I think more enlightened teachers/schools etc deal with needs not labels, but, that's not always been my experience thus far.
You are so right to say that the label doesn't capture the essence of the child and the variety of difficulties encountered and demonstrated within the spectrum is extraordinary and child specific. This may mean that a label becomes almost meaningless as it may do little to aid understanding of a specific child's problems. I suppose, though, it does give you, as a parent, something to latch on to when you negotiate/demand help for your child. Something that can't be dismissed out of hand as a 'quirk' or something they'll 'grow out of'.
If DS was at home with me all the time, I wouldn't need/care about a label. Outside the home, in school, I worry about the potential impact that autism may have on his development and that this may affect his learning in a way that needs understanding and support. I can start to see that emerging already in small ways as he gets older.
I hate, hate, hate, the diagnostic process though and think it is largely a load of pants, so I can quite understand the desire to avoid it