Bugster - I am more than happy to continue to try and have a rational discussion with you, however, I am going to have to request that you actually partake in the argument rather than making wild statements with very little argument or indeed, evidence for your argument.
I have already, numerous times, throughout the thread, explained why in fact, Christianity DOES affect our laws. I really don't like repeating myself endlessly, so read back if you're confused rather than repeating yourself and failing to provide any argument behind your point. I think that could be what is frustrating people. Its certainly what is frustrating me.
FYI most democratic countries have democratic second chambers (e.g. America, most European countries that have two chambers etc).
The fact that Bishops are a minority doesn't mean they don't have power (consider the benefits cap, which I happen to agree with their stance on, but which does prove the power they hold, and it is of course not always wielded for good). Read a book called "Veto Players" on how minority groups can hold power in different systems.
There are plenty of ways to provide a less populist balance (the word you're looking for isn't conservative though). If you do indeed mean conservative - then I merely need to point out that mindlessly keeping things the same for "tradition" is just as bad as mindlessly changing things, and would reference the Lords position of Fox Hunting (defended on the grounds of "tradition" not to mention the upper houses wild class bias). In any case, you are right that traditionally the Lords does provide a Conservative balance precisely because of it's upper class make up (fun fact; the parliament act has only been used once by a Tory government).
Finally, and most importantly, saying that Bishops in the Lords is better than Totalitarian Communism isn't an argument; it what is currently know as a straw man and restricting the options. (i.e. setting up a weak argument to defeat it) No one is arguing for a Totalitarian Communist regime, just a democratic, secular state. Your argument makes about as much sense as retorting to someone who expresses regret at getting hit by a car "well it's better than being hit by a bus" clearly there preferred option was to not get run-over!
It's people like you, who through 5 minutes on Wikipedia could double you knowledge of politics in this country, that make it a miserable place to live and cause subsequent governments to fuck up again and again in the name of "what the country wants".