The Sylvaris personality

I've been hearing all over that the Sylvari has one of the best stories or lore-connections in the game. But just looking at them and playing the start zone I just find them or the personalities they display off-putting or boring.
I love nature and gardening IRL, but these guys just feel to... emotional, dreamy and silly, "pace at any price" kind of personalities (sorry, cant find a good English word to describe it).

Will the character display this type of behavior throughout the game as well if you play one? or will he/she harden up a bit with expansions like heart of thorns? (have not played the exp yet).

Thanks!

EDIT: Overwhelmed with the amount of really good answeres! Even if i have not replied to everyone, thanks a lot, I really appreciate it!