You were talking about the NSA breaking SSL, not lawmakers forbidding it.
If the problem is with the analogy, without analogies this time:
> I'm arguing against making SSL mandatory, because that will force NSA to break it so they can do their work, and then we will have nothing to protect our privacy.
Without SSL, our privacy is unprotected, since eavesdroppers can read our traffic. Now add SSL, and eavesdroppers cannot read the traffic. Then NSA breaks it, and eavesdroppers can read our traffic again - we've just circled back to the beginning. We will have nothing to protect our privacy, but we already had nothing to protect our privacy before we added SSL; and in the meantime before the NSA breaks it, we had privacy.
And it assumes that the NSA will be able to break it, and that the NSA is the only attacker which matters.