Why I have the right to control my ideas? Because they're mine perhaps? I spent time and by extension money on it. You don't have the right to wander into my property, why doesn't that apply to IP? Why does the right to property supersede your right to liberty?
Because we both cannot use your property at the same time (thus, if I were to use it against your will, I would deprive you of its use). We
can both use your idea at the same time, so I can use it against your will
without depriving you of its use. You don't seem to realize that the reason theft is bad is because it deprives the rightful owner of its use.
Think about it this way. If we could make copies of physical things as easily as we could information, there would be no need for property rights. If you had a lawnmower and I made a copy of it, have I diminished your use of the lawnmower in any way? Perhaps you sell lawnmowers... well, it's kind of dumb to try to sell copies of things that can easily be copied. Should you be able to kill me in order to stop me from copying your lawnmowers?
Intellectual property is just as stupid.