So I only see three reasons to be famous: 1. The attention and adulation is your drug. I think there's no shortage of people who fall into this category. 2. To convert that fame into opportunities you wouldn't otherwise have; and 3. To convert that fame into money. Obviously if you're just plain rich then (3) is moot. If you fall into (1) then money can buy you fame to a degree. So that leaves (2). Wealth will give y…
Fourth reason: To be to be remembered after you’re gone.
If it's just the feeling of being remembered for something then there are lots of other things you can do to make people remember you. Nobody remembers the rich merchants from 2000 or 3000 years ago but people still remember the conquerors who changed maps and the artists of those days whose works have been immortalized. Whether you like it or not, someone like Hitler or Tolkien will be more likely to be remembered than someone like Gates and no, Hitler won't still be considered as an irredeemable monster then, just like how people don't get offended by the conquests and massacres by Genghis or Napoleon unless for nationalistic/jingoistic reasons.