i always offered a double when i was in the lead .. and sometimes to get a psychological advantage :)
but now i had my opponent in the lead .. and wondered why he didnt offer a double (he was at 2 points in a 4 points match) ... of course i would have declined as he was far in the lead .. bringing the score to 3 points for him
it turned out he was more experienced than me .. as i didnt offer the double .. but played the game to the end .. and backgammoned me to get 2 points to win the match
so for all other people who start playing with the cube ... the cube isnt the only way to get 2 points ... you can also finish before your opponent has a piece off the board .. and thereby win 2 points :)