However, to me it’s hypocritical to justify not having children by essentially claiming that their life wouldn’t be worth living but at the same time you yourself continue your existence here.
I don’t think it’s hypocritical. To create new life and to sustain life are two different things. While there’s a certain relevance, the act of creating life has more to it than simply sustaining life. Sustaining maintains the status quo which while not ideal, the opposite also means ending a life which has far greater implications that are closer to ending life.
It’s not hypocritical to think that bringing someone to life might be a net negative and also agree that to stop continue living would result I’m a net negative because of reasons like how there’s people who are reliant on them.