It really really depends. I've never been into conspiracy theories, and although I do believe that some do hold an element of truth , some are utterly ridiculous (i.e jay-z and beyonce illuminati). The AIDS epidemic in Africa to wipe out African people sounds VERY extreme and rather obsurbed, BUT if you truly truly look at the history of Africa and the racial and economic tribulations between Africa and the West, I can see how this conspiracy can hold quite abit of weight. The European occupation of African resources has been immensely relentless, barbaric and absolutely non remourseful without the slightest justification. Considering the pattern of eradication and occupation in European/African relations, it doesn't suprise me the extent they would go to to gain pretty much anything.
Honestly, I believe AIDS was man made, but let me make clear that I never developed my stance on this from a mainstream conspiracist standpoint. Even though many conspiracies can be extreme and rather silly, you have to be EXTREMELY naive to believe that everything in front of you is completely true and factual in how they present it. Many things have gone on under the table and still continue to do so today, and they will also continue to do so.