Batch file, If Statement not working

The following if statement is not running. It just ends the bat file It stops the process. Why is this happening? How do I stop it?

    if "%Choice%"=="si" (GOTO Case2) else (
        if "%Choice%"=="s" (GOTO Case1) else (
            if "%Choice%"=="ti" (GOTO Case4) else (
                if "%Choice%"=="t" (GOTO Case3) else (
                    if "%Choice%"=="i" (GOTO Case5) else (
                        if "%Choice%"=="cp" (GOTO Case6) else (
                            if "%Choice%"=="kp" (GOTO Case7) else (
                                if "%Choice%"=="?" (GOTO CaseHelp) else (
                                    if "%Choice%"=="c" (GOTO Case8) else (
                                        if "%Choice%"=="sl" (GOTO Case9) else (
                                            if "%Choice%"=="sf" (GOTO Case10) else (
                                                if "%Choice%"=="fz" (GOTO Case11) else (
                                                    if "%Choice%"=="dc" (GOTO Case12) else (
                                                        if "%Choice%"=="cm" (GOTO Case12) else (
                                                            if "%Choice%"=="wh" (GOTO Case13) else (
                                                                if "%Choice%"=="vs" (GOTO Case14) else (
                                                                    if "%Choice%"=="it" (GOTO Case15) else (
                                                                        if "%Choice%"=="tm" (GOTO Case16) else (
                                                                            if "%Choice%"=="d" (GOTO Case17) else (
                                                                                if "%Choice%"=="ed" (GOTO Case18) else  (
                                                                                    if "%Choice%"=="be" (GOTO Case19) else (
                                                                                        if "%Choice%"=="me" (GOTO Case20) else (
                                                                                            if "%Choice%"=="ap" (GOTO Case21) else (
                                                                                                if "%Choice%"=="pc" (GOTO Case22) else (
                                                                                                    if "%Choice%"=="sc" (GOTO Case23) else (
                                                                                                        if "%Choice%"=="c" (GOTO Case24) else (
                                                                                                            if "%Choice%"=="ll" (GOTO Case25) else (
                                                                                                                if "%Choice%"=="ij" (GOTO Case26) else (
                                                                                                                    GOTO CaseError)
                                                                                                )
                                                                                            )
                                                                                        )
                                                                                    )
                                                                                )
                                                                            )
                                                                        )
                                                                    )
                                                                )
                                                            )
                                                        )
                                                    )
                                                )
                                            )
                                        )
                                    )
                                )
                            )
                        )
                    )
                )
            )
        )

Also, is there an alternative of using an if statement as this method is uite time consuming.