These days, one of the chief concerns when considering property ownership in a single name is liability for court judgments. Suppose Bob insists on titling the house in his name alone. A few years later he's driving home from an office party, swerves into the wrong lane and causes a horrible car crash. Because the house legally belongs only to him, in most states it could be sold to cover the judgment. Living in Florida, Bob and Susan would be better off than most.
Some people do that.
But they should consult an attorney about all the aspects of their situation, including whether such ownership would accomplish that purpose and tax implications, before making a decision like that. Tenants in Common. If Bob and Susan decide to own their home as tenants in common, they're each considered the owner of an undivided interest in the whole property. They may each sell their interest to someone else or leave it to someone in their will, whether or not the other approves. And when Bob gets that big court judgment against him, the creditor may wind up owning his interest in the house.