Why wouldn't you use the sample if it sounds the way that you want?
And why would you re-create it to get the same exact sound just to avoid using the sample?
People seem to think that using a loop or a sample from a library is somehow cheating, but that's kind of silly.
Look at the piano... it's full of pre-set sounds, and it's dirt easy to play them... just press a big rectangular button.
But the success in playing a piano isn't that you create your own sounds, it's that you take the sounds that the instrument provides, and you arrange them in such a manner that the result sounds good.
Loops and samples are really no different.