Just a general question for all you multi and poly users out there. I am back playing after 15+ years of retirement - social competitive tennis level. When I was at my peak at 15 years old a string would last ages, and I didn't change them when they lost that loving feelin. Now I'm reading these posts and people are changing their strings after 1-2 matchs, or after a week of play. I've ordered some strings but am i really expecting them to break after a week?