there's nothing wrong with arguing your point of view when you know you're right
i'm pretty confrontational in general, i don't really get intimidated so i've never had a reason to back down.
my parents were pretty supportive of most things i wanted to do, i tended to get into a lot of fights when i was younger so they steered me towards it i think in hope of me learning some self control and maybe putting my aggression to better use, it sort of worked.
never too late to start, why don't you look into it now?