No offence, but I have no idea why people tend to use 909 sounds exclusively. It seems so limiting. That's just me though.
Purist ideas about synthesis being more legitimate than sampling? Newbies to dance music production seem to be particularly prone to dismiss sampling entirely based on such assumptions before they even work out what synthesis and sampling can and cannot do.

It reminds me a bit of the stock market, where newbies there buy equity exclusively and totally ignore bonds, because all they've heard about is shares in companies.