it is not enough to merely commit suicide

I want my entire existence to be erased
but alas, that can never happen
suicide only brings more attention to your existence, therefore it is best to live out your life as unnoticed as possible

>>1
If you fall into a black hole, your entire existence will be erased if you're following the hawking-school of thought, but alas even he thinks he's wrong about that, considering hawking radiation and Susskinds rebuttal. But don't loose hope because there is another alternative to complete eradication, it's called a "white hole" and works like this: If you distance yourself far enough, given time, the expansion of the universe will surpass the speed of light. This makes you completely inaccessible without violating any information laws. Your entire existence will effectively be gone relatively to your peers. Think about it.