Why Some Testers take more time than others for Testing

When it comes to software testing, people often get serious regarding perfection. In the pursuit of attaining the desired perfection, a lot of time is spent. However, the satisfaction aimed for is not always achieved. There remains a doubt that the results could have been better, had it been tried differently. This is not the only reason though; there are various other reasons as well those make a tester think a lot, wasting valuable time.