The answer is: Didn't want to spoil inheritance

Ruth 4:5-6

In the heart of the book of Ruth lies a fascinating narrative about family ties, loyalty, and, yes, property rights. When the kinsman hesitates to marry Ruth, it's not just about affection; it's heavily tied to inheritance laws of the time, especially the concept of redeeming property. This land had a legacy, and by marrying Ruth, he would also be responsible for any offspring she bore, bringing a whole new family dynamic to the equation—one that might diminish his own inheritance.

This story showcases the tension between personal interest and communal obligation that was prevalent in ancient Israelite society. Just think about it: the idea of land itself carries so much weight in Scripture. It goes as far back as the Promised Land discussed in Exodus.

Here’s a neat trivia nugget: the name "Ruth" translates to "friend," only fitting for someone embodying such incredible loyalty. And if you’re ever in the region of Bethlehem, many locals still embrace the legacy of Ruth, acknowledging her powerful impact on the lineage of King David—another enduring testament to how personal stories intertwine throughout biblical history! So, while her potential suitor contemplated his inherited stakes, Ruth was continuously reinforcing the timeless power of love and friendship against the sometimes harsh measures of society.