Senior Center vs Green Space

After reading the article which talks about the opportunity cost of building a new senior center on Greene's Field a place where young children or families can play sports and picnic. The argument is that they should not build on this prime piece of property because future generations need to enjoy this green space. They feel that there are many other places to build this senior center which is much needed in this community as well. From an economist's view point I feel that financially this decision is obvious to build on this piece of ground because it would be making money versus just remaining open space requiring upkeep of the grass and landscaping. The community would benefit from the income produced by the senior center and also having a place for community functions. On the other hand there is sentimental value on Greene's Field because many generations have grown up playing sports on this grassy area. Between the two arguments I feel that the opportunity cost is greater to leave the field as is because ultimately the community will benefit from a new senior center and there are always recreational parks and areas for families to get together and play sports.