If you are a novice player, you really don't have to worry about this. Memorizing opening lines doesn't become an important part of the game until you are a very good tournament chess player. Until you are much better, it is far, far more important to have a general understanding of opening principles and a good eye for tactics.
This is not to say that opening study is not very important at higher levels, and if that upsets you in principle about the game, I totally understand. But it distresses me to see novices give up on chess because they are under the impression that at their level it's all about memorizing some killer opening shots.
Note that high-level Go play requires a lot of memorization too (joseki, life and death status of common shapes, etc.).
This is not to say that opening study is not very important at higher levels, and if that upsets you in principle about the game, I totally understand. But it distresses me to see novices give up on chess because they are under the impression that at their level it's all about memorizing some killer opening shots.
Note that high-level Go play requires a lot of memorization too (joseki, life and death status of common shapes, etc.).