life span of mag springs

[kt]

im sure this has been beaten into the ground many a times in many a chat forum but i almost feel bad for the spring in my g26. it has been filled with the same stack of gold dots for about 6 months (when i get to the range i drop that clip because i know gold dots go where the win white box goes on the target). but i am wondering what the latest theory is on how to treat you mags, is it better to leave them loaded or to alternate mags to prolong spring life. does it even really matter? thanks kt