We are a commune of inquiring, skeptical, politically centrist, capitalist, anglophile, traditionalist New England Yankee humans, humanoids, and animals with many interests beyond and above politics. Each of us has had a high-school education (or GED), but all had ADD so didn't pay attention very well, especially the dogs. Each one of us does "try my best to be just like I am," and none of us enjoys working for others, including for Maggie, from whom we receive neither a nickel nor a dime. Freedom from nags, cranks, government, do-gooders, control-freaks and idiots is all that we ask for.
Madness Made Them Great - Thomas Jefferson, Steve Jobs, Estée Lauder, and Charles Lindbergh suffered from the same mental illness.
I do not think any professional would term obsessionalism to be a "mental illness." It's a character trait which exists on a spectrum, more common in men than in women. A good dose of it can be highly adaptive in life. Too much can be paralyzing.
I would say it is not obsession, but extreme ability to focus. And, yes, this is a male trait. To shut off all other noise/thoughts and focus on one goal. That's what makes men so good at hard physical labor and so hard to communicate with! LOL.