It is not aesthetically pleasing at all, which is important to me, for whatever neurological reason. Also, I consider a laptop stand as just a device to raise the screen to a better ergonomic level on the understanding that an external keyboard and mouse will be used to operate the device.
Otherwise, in a laptop stand, ergonomic keyboard use requirements pull the incline towards level, and ergonomic monitor height requirements pull the incline upwards, so there is no healthy angle for a laptop stand.
As already mentioned by andrei_says_, typing fingers should be below the wrist (as correct piano playing has proved for centuries).