[rossdavidh]

Well in one sense you're right, however...if they decided that they wanted to go for orbit without first doing an up-into-space-then-down trip, that wouldn't be a very wise thing to do. Test at each step. It makes perfect sense to do up-into-space-then-right-back-down first, before you try for orbiting the Earth, for many of the same reasons that NASA did it that way.