There have been situations where if a test meets certain criteria you want to go through 5 sequences of code. However, if one of the criteria is missing, you want to skip the first sequence and do the other 4. On down the line, you may only need to do the last 2. The subroutine may look like;
Code:
Main:
SELECT CASE Var
 CASE < 50 : GOSUB Sub1
 CASE < 100 : GOSUB Sub2
 CASE < 150 : GOSUB Sub3
 CASE < 200 : GOSUB Sub4
 CASE ELSE : GOSUB Sub5
END SELECT
GOTO Main

Sub5:
 TOGGLE LED1
Sub4:
 TOGGLE LED2
Sub3:
 TOGGLE LED3
Sub2:
 HIGH LATA.4
Sub1:
 LATB = 0
RETURN
Here is a legitimate case of needing only 1 RETURN for multiple subroutines.