Is it really worth it?
For me it is. Even so, I'd say inputing the password is the hardest part of GS2. But, if you don't want to transfer exactly everything you can input a shorter password. There are three types of passwords: bronze, silver, and gold. Gold passwords are the longest at 6 pages(though the sixth page is shorter than the others), but it allows you to bring over everything exactly as it was. Make sure you get all the Djinn in GS1. There's a secret dungeon available in GS2 if you have all of GS1's and GS2's Djinn.
And, uh, there are also cheat gold passwords that will allow you to bring over GS1's characters at level 99 with the best equipment possible. I think the latter part of the game would be too easy to be fun if you did that, though.