These Marvel villains are beloved, but their plans are completely nonsensical.
Marvel brought a certain maturity to comics, with a more realistic approach compared to the DC Multiverse.
Marvel's heroes and villains feel more realistic, making their threats and plans more believable, like Ultron's goal to destroy biological life.
However, not every Marvel villain has plans that make sense, unlike The Hood's team or X-Men villains using tools of oppression.
Someone like Ultron is so chilling because he wants to destroy all biological life and his plans are usually just to use overwhelming power to enact that; they make sense.
Author's summary: Marvel villains' plans can be nonsensical despite their realistic approach.