Actually, yes, I do want to see non-lawyers writing laws. I see this as an issue of competence and self-interest.
On competence - I'd agree that the law is tricky, but I don't think it's impossible for a non-lawyer to learn it. Law isn't like advanced mathematics. Sure, you need to be astute and pay attention, but you and I can read legislation, whereas non-mathematicians really can't access the literature on abstract algebra.
Also, I actually doubt that most members of congress actually write legislation. I doubt they even read most of the legislation they vote on.
As for self-interest... well, how big should dog's teeth be? To me, that depends on whether the dog is defending me from an attacker or, well, attacking me. Honestly, I think that the legal cartel has not had the best interests of the American people at heart. A fifty thousand page tax code is good news for tax lawyers. Software patents seem to do a lot more good for patent lawyers than for software developers. Non-compete clauses? I hate them, so do lawyers. Guess what profession is exempt (by statute) from non-compete clauses in all 50 states? (hint: it's the people who write the law on non-compete clauses).
So overall, I think that developers are smart, literate people who absolutely could learn how to competently create legislation, and that even if they aren't quite as good at it as lawyers, they'd be far more likely to represent my interests as a developer.