Is slamming the person for different political views the right way to debate politics?

Both sides do it before any of you get all upset.
Now of course since you are more sensitive to your political beliefs you feel the other side is more guilty of personal attacks, regardless if that is right or left beliefs.
I have seen it come more for front since Trump took office, mocking a handicap reporter, slamming political opponents personally, instead of their views.
Is this the new normal?
Yes I have been guilty of it myself from time to time.
Why do we even discuss politics with people with extreme right or left views, we are never going to change their mind about those views, is it worth it?
Does it help your side if you call the person a moron, or idiot?