Sometimes an old athlete may want to come back for some special match. Some bettors might still bet on him despite of old age and lack of recent experiences in the sport. That is because of what we call nostalgia. They might recall the past memories or past performances of the athlete that may not necessarily reflect the recent performance of the athlete. So be careful when betting because you might just be nostalgic.
Indeed, we need to be careful with nostalgia as you mean, but it all depends on the outcome, because if it is wrong then it will be dangerous, an example I mean when a gambler wants to try his luck by risking a large amount of money and without good financial management when gambling, then it will be very dangerous, while the good outcome I mean is if someone who gambles on a match is nostalgic, then he should really only want to bet or gamble for entertainment purposes only, while the winnings should be considered an additional entertainment bonus. So, in essence, it is all intended for entertainment and reminiscing about the past, so we should use it not only for winning, so that unwanted things do not happen.