Girls, what's exciting about high testosterone guys?

'Cause I've heard that eunuchs (guys whom in the olden days had their nuts chopped off) lacked almost all sexuality, and generally didn't feel much emotion at all. That would obviously be boring.

But on the opposite side of the spectrum, there are very high testosterone guys who are maybe more sexual, but are prone to aggression, tend to abuse drugs and alcohol, and often have trouble with the law.

What's exciting about high testosterone? And at what point is testosterone just "too much" and makes the guy repellent?
Girls, what's exciting about high testosterone guys?
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