Some things that are morally acceptable today (that shouldn’t be but are for various reasons) will be unacceptable in the future 

Some things that are morally unacceptable or weird to you today very well may be normal in the future

creating and destroying; built flying cars & autonomous vehicles, now building /faust, more here: /july, web: july.rocks

The example many here like from the 2005 Rome TV show: How the condition of slave was perceived as “normal” then, killed mastered automatically triggering slave suicide.

We’ve come a long way. But… all roads lead to Rome?