We're not some small tribe in danger of going extinct. It's a terrible argument to say someone who doesn't reproduce is a freeloader. We need less people on this planet, not more. We're on pace to have 10 billion by mid century. That's going to be a challenge to support that many people while not ruining the environment in the process.
To be honest, that's a very freeloader-like mindset: "I don't have to contribute to X because someone else will take care of it for me."