Building a fitness field is beneficial to the fitness and entertainment of most people, while building a parking lot can only meet the parking needs of a few people. Moreover, people who need parking spaces also need gyms, while most people who need fitness and entertainment may not need parking lots. Such a simple "more or less" tells us that building a gym is obviously more important than building a parking lot.
Secondly, most of the old residential areas are open residential areas developed and built by the government. Due to historical restrictions, most of these communities did not plan fitness centers and parking lots at first. But there's still a little room left. As far as the attributes of these open spaces are concerned, they should belong to public welfare space rather than private territory. If these spaces are re-planned and public gymnasiums are built, the land use will be changed without changing the land attributes; If it is converted into a private car parking lot, it will not only change its use, but also change its public welfare attributes. Even if it is paid for use, its fees will be used for public welfare undertakings, and its "public welfare" use value will be discounted. This clear-cut affair tells us that it is obviously more appropriate to build a fitness center. This is a matter of principle, and right and wrong cannot be confused.