The ability of morals to evolve to adapt to society is a good thing.
Again, I don't believe merely the
ability of "morals" to evolve and adapt is a good or bad thing. "Morals" as you speak of them, can evolve badly as well. Germany, Russia, and Cambodia, for example, have all suffered at one time from morals evolving into an unfortunate state.
As we become smarter and our society become larger and more global, we realise that certain things we've believed to be true in the past are not anymore.
Both good morals and bad morals are based on that which is true. I'm not so sure "smartness" has much to do with distinguishing good morals. It seems if you are smart enough, you can prove any moral you wish to follow is correct.
Morals aren't absolute, that would mean they aren't subject to change.
Are you sure you said the above correctly? I don't understand what you mean.
I would say that they are objective and reflect all of humanity. Some morals never change, because they are the foundation of how a societal structure works.
And which societal structure has everyone agreed to?
That would be "killing and stealing", if you think more should be involved in foundational morals, then please add them and why you think this should be so.
Being a Christian, I would agree with you. I don't believe killing and stealing are ever good. However, others have different views even to those foundational morals; especially when you begin to encounter what many consider to be exceptions to the rule. Killing in self defense, killing as a means of appropriate justice, and killing some people for the greater good of humanity are all exceptions commonly held. Many of those exceptions can be reasonably outworked into some fairly horrific ideas and actions.
And because I am a Christian, of course I would say the "morals" presented by Jesus Christ should be foundational as well. I'm not saying everyone accepts them, but I believe they work the best. One in particular, I feel, should be added to the list. Grace. Grace is important because it allows a way to stop the cycle of violence, killing, etc. that has already been started regardless of what may be seen as self defense, justice, good of all, etc. Grace relieves the burden of vendeta that the victim holds and forgives the perpetrator of the action.
If, however, you believe there are no exceptions to that which you presented as bad, I think thats fine. However, I do hope you see the value of grace.