Come on now, they've been grasping at the straw to make sure only the police and armed forces have anything beyond bolt-actions and .22lr's since the 70's. I want to have a semi-auto too, if I have to build one, then so be it.
But, the fact that you want one shouldn't be enough to have to deserve one.
Police officers and members of the Armed Forces are allowed to use guns, only when they are trained in them, and they're well trained on who to pull the trigger at.
The fact that we have guns illegal means that they are rare on the streets. Meaning one doesn't a gun in order to protect themself from another person.
They're illegal for a reason, to protect people.
We don't need them to go hunting.
We don't require them to protect ourselves, we trust the fact that there are so little of them available, and that the Police and Armed Forces are capable of protecting ourselves.
With your argument, it seems more like a child wanting a toy.
"They have one, why can't I have one!"