For me, yes, its worth it. From what I have read, the "bonus" items are available to all your characters and level as you level. So they would be at least equal to or maybe slightly better than the normal gear you find. Since I'm an alt-aholic, the reply value over multiple characters is an enormous boost. Since they level with the characters, I never "have" to buy new equipment or weapons. I can focus that money on crafting, repair, or "cool stuff". Thus, I won't have to replace those items until I reach level 80 (where the awesome gear will be available). And you only need 30 points to collect those bonus rewards.
Not only for the added bonuses, but like STC95 said, you can definitely appreciate the back story far better. I really like the Guild Wars story and now that the human race is an endangered species, it really gives you perspective. In GW1, humans dominated everywhere. Now there's a sense of lost history as humans are dwindling and other races are emerging.
And best of all, in GW1 you get to kill Charr. Shoot 'em, burn 'em, hack 'em into little pieces. Its really satisfying listening the death howl of a dying Charr at your feet. Bad kitty.