I think most of the time they're just baiting, I do the same sometimes, I don't even hate at all Zoro's character. I liked Sanji and Zoro in the same way, but I started to love the cook after his germa flashback because really reminds me of myself.
I actually love Zoro/Sanji interactions.

But since I have to become the new Chrono lemme make fun of Lolo.