So, you haven't broken your strings, but you're wondering if you should restring. Here are a few things to consider.
1. How do the strings feel? Do they feel overly soft or "mushy"?
2. How is your power? Are you working harder to generate depth on your shots?
3. How is the vibration? Are you feeling more shock at impact?
4. Have the strings been in there for over a year?
Answering any of the above with a yes, and you should think about replacing your strings. Even when they don't break, they can "go dead", resulting in poor feel, less power and more vibration on impact.
Over time, strings just lose their ability to give at impact and "snap back", creating power, spin, and a consistent feel. Even lightly used strings will lose this over time the same way a rubber band left stretched out too long will not snap back.
Think your strings may need changing? Stop in and we will be happy to go over your string options and help you pick the best one for your game.