[Rhod the Red]

I don't think it's unreasonable. Take the Third Age: Sauron has returned, Orcs are raiding Ithillian, Osgiliath has been taken and Moria and Mirkwood under seige by goblins.

Plus Rohan and Gondor don't communicate with the Elves, combined with whispering unfair rumours about the 'dangers' and 'perils' of seeking them out.

If you had uninvited visitors at the edge of your country in those times it woul;d be only fair to raise your bow and arrow and ask "What do you want?" wouldn't it?