why some people become psycopath ?

Well , they go crazy

both genetic and environmental factors

You're born a psychopath. You can't become one

some are born with such issues, others developed it from their upbringing such as child abuse and others it manifests even older through other issues such as shock...

You are born like that.. the kind of life you have as a kid define your psychopath level i guess

Isn't a psychopath someone who had a mental issue? Does that mean it is a mental disease?

Almost everyone answered here perfectly but I would like to add for those who aren't born with it, I feel each one of us has a monster inside us, and living in a world with a set of rules (not like animals) we can stop ourselves to live up to our morals. Our situations, conditions, environment, and mental health play an important role to hide that monster. I mean at one point we all have imagined something sinister but didn't act on it.

Psychopaths are usually born with this condition.

But this doesn't mean that all of them are evil people, the thing is that they're incapable or almost incapable of being empathetic, showing regret and they tend to be more aggressive.

Honestly, if we were to make a clinical research on the biggest corporates' CEOs, I feel like more than half of them would be psychopaths.

I don't know. I'm not one

The Simple answer is because of other people