We can't all be nice all the time. Nice is relative, from different points of view. Some person might say child abuse and genital mutilation is nice, some might not. So you still haven't expressed anything, really, by that initial statement.
Now intelligent/reasonable, is easier to work with, since it's not a matter of morality. But your moral thinking, on the other hand, is pretty difficult to understand. I think I speak for the both of us though, that it would suffice that people weren't violent towards each other - that's all we would ask of them, concerning niceness, goodness, and all else. Anything else is not so much an obligation we have towards each other as something we could do if we wanted - like helping one another. At least that's my view. Tell me if it differs from yours and how, if you wish.
Now intelligent/reasonable, is easier to work with, since it's not a matter of morality. But your moral thinking, on the other hand, is pretty difficult to understand. I think I speak for the both of us though, that it would suffice that people weren't violent towards each other - that's all we would ask of them, concerning niceness, goodness, and all else. Anything else is not so much an obligation we have towards each other as something we could do if we wanted - like helping one another. At least that's my view. Tell me if it differs from yours and how, if you wish.