(Omega was supplied so that magical scenarios would be possible for the thought experiment.)

My definition vs your definition of death is very enlightening in light of our differences on wireheading.

You view being alive as being able to think, to receive input and experience. I view being alive as being able to act, to change and shape the world. This division cuts through the experience of wireheading; it is the state of thinking without the ability to act. Life to you; death to me. I would venture a guess that anyone who is pro-wireheading would hold your view of life/death while anyone who is anti-wireheading would hold my view of life/death.

You wanted to know why all those other arguments sounded good to everybody, but not to you. We have incompatible priors. There is no sufficiently convincing argument that can cross the gulf between life and death. I do not have sufficient rationalist superpowers to try and change your priors (or even make you want to change them, as I wouldn't want to change mine). But if you wish to understand what other people are thinking as they reject Wireheading, simply close your eyes and try and imagine the choice you would make if you instead believed your time of death were the instant you never acted upon the world again.

They are not being convinced by insufficient arguments. They are merely starting from a different metaphysical position than you.