I like upholstered headboards. I like to sit up in bed to read or watch Tv, and it is very comfortable. DH and I have a custom upholstered headboard that we got from Calico Corners. It is almost 10 years old and still in great shape, and was much more reasonably priced than I would have expected.
On my kids beds I have the pottery barn upholstered headboards that you can use with slipcovers. In DD's room I have one of the PBS slipcovers, in DS's room I have a slipcover I sewed myself.
Ballard Designs also has a good selection of both fully upholstered and slipcovered headboards.
It doesn't matter what you think, just that you do.