Always armor, because you never know. I have a Joe Rider jacket that I wear basically 3 seasons, with vents, and take out liner, then i have a Icon Mesh jacket-still with armor, that i wear when it's 90+ in the summer.
I often have people ask me why i wear all that gear when it's hot out, and reply is always the same: safety. I want every chance possible if I go down that I do the least amount of damage to my body. i'm not kidding myself in thinking i'm indestructible but I do'nt wanna regret not wearing something if that ever happens to me.
(just my opinions obviously, to each their own)
2017 Honda Rebel 500
2018 KTM Duke 390