Personal Moral "Laws".
Everything that is wrong has a reason WHY it is wrong; a reason that any person of sound mind could understand, whether or not they agree with your religious beliefs.
I believe that if something is wrong, it hurts someone. That is the only basis I can think of to judge morality against; does it hurt someone?
If I can't think of a reason why something is wrong (who it hurts and how), then I will question why it is considered wrong, and probably not consider it wrong myself.
Sometimes, of course, discretion must be used, and there are cases of "The Lesser Of Two Evils".
Beliefs should not be forced upon others; your OWN ideals, which I hope you have come to legitimately and through your own discretion, are no better than someone else's, who has done the same but came to a different reasoning than you. That is arrogant. People have free choice; everyone has the right to choose what they believe, and, if it doesn't harm anyone, they are fully entitled to that.
People are born with different personalities; whether through genetic makeup, something divine, or both. Those personalities are built upon through ones environment, and the situations one is in because of their environment and the people in it. These things cannot be exactly the same for everyone, so, obviously, people are going to think differently.
Getting a different point of view than your own is a very handy thing, and something can be learned form everyone because we think differently, because we've experienced different things.
Saying, outright, "You're wrong" in terms of an opinion is pretty much telling them that their reasoning isn't as legitimate as yours, and I think that's a hefty accusation.
Someone's personal beliefs or the personal beliefs of a group of people should not be forced upon someone else or another group of people who has different beliefs, simply because it goes against the former person's/group's beliefs and harms none. It is petty, arrogant, and disgusting that one thinks this is okay, and that it's let to happen.
If you feel like you can't question or change your beliefs, you're probably someone who needs to do that the most.
The only two reasons I can think of holding a serious and sincere argument are to:
A) Better understand where the other side is coming from. Honestly.
B) Change the other side's mind.
If you are on the offensive, (meaning here both "saying offensive things", and "on the offensive"), people will getdefensive, and if people are defensive, they are a lot less likely to honestly hear you out. If you're attacking them, it's not at all likely that any normal person will stop and actually listen to you. They will defend themselves, as is natural instinct when one is attacked.
Therefore, how can you expect to change someone's mind by attacking them? Everyone has feelings. Everyone deserves some basic form of respect and consideration as a fellow human being. No matter how adamantly you believe in your beliefs, that doesn't make them right, or better. Your feelings, just because they're the ones you have closest at hand, don't hold precedence over anyone else's, and they do not cancel out anyone else's. Your beliefs aren't the only ones that matter, they aren't the only ones that may be true; your feelings are not the only one's that matter. Your feelings are no better or worse than anyone else's, and they're certainly no more important.
Everyone is equal because everyone effects everything. Even if you don't meet a person, they effect your life, because they are meeting people and doing things; and the people they meet are meeting people and doing things; and the people they meet are meeting people and doing things, etc. And eventually, that comes back to you. Everyone is equal because everyone effects everything.