You can stay in this brand of gym forever, and you don't have to buy it after you buy it.
Secondly, when you say good or bad, you should mean cost performance. Personally, the difference between a lifetime card and a secondary card lies in the cost. If you can insist on swimming and fitness at least three times a week, then the lifetime card is cost-effective, and the lifetime card cost is too high. If you go for three minutes once a month, then the second card is cost-effective.