wrong

Is it wrong to feel like the world would be a better place without you?
not in a morbid and sadistic sense, like i want to kill myself, but in the sense that if you were erased from the world, birth, death, life, everything. If my parents only had one child, and if my ex-girlfriends hadn't ever dated or known me. This isn't a suicide note, there are completely different circumstances between killing someone or something that is already in the world or it never having existed. If i died now all of my friends would miss me, and i would leave a hole in their lives that i have made, but if i didn't exist ever, they would be just as happy. So what do i contribute to this world, beyond more self-pity and unhappiness? I think the answer is not much, so i try to make it better, and i fail every time.