@rootcompute@buru5@jake4480
I read somewhere that using periods in a chat makes you seem insencere. (Or a study found out that is how people perceive it)
Exclamation marks on the other hand are received positively (I forget which way exactly), at least as long as it's a reasonable amount.
I'd say considering how common emoji are these days, the exclamation mark was way ahead of it's time.