Comment: Re:This is why, if I get SC2 (Score 1) 200
Actually memorizing joseki isn't really as important as understanding them. If you blindly use a memorized joseki and don't take into consideration how it effects other parts of the board, you'll put yourself in a disadvantage. Just using standard joseki's in each corner can be bad if they don't work with each other. One of the things I like about Go is that it has both local and whole board thinking to take into consideration. There becomes a sort of intuition of game flow for local battles based on the positions of everything else.
Also, making mistakes in the early part of Go is more correctable than in Chess. Granted in very high level games this becomes less the case, but often in Go even a failed battle will leave some usable aja for later that can be exploited.
Besides memorizing joseki and maybe practicing life and death problems, the middle game and strategy of dividing up territory, performing invasions, chasing your opponent for profit, all are things that aren't really easily memorized. Those are often the things that end up winning games.
As a side note, there are some players who play more moya games that focus less on corners. I heard from someone recently that Takemiya Masaki once said that he would never play the 3-3 position because it felt like the stone was so close to just falling off the board, and his games styled more towards controlling the center. It's a more recent development but one that is still played out and used in professional games. You have to remember that even if you lose territory for 3 of the 4 corners, you very well may also have center influence from those same 3 corners which is also worth something.