While buying a house or condo does turn out to be a wise investment for many people, it's simply untrue that renting is universally wasteful for everyone. Renting Always "Throwing Money Away" it depends upon what we value. Opportunity Costs in Buying a House Some people invest so much time in maintaining their house and fixing it up that the value they add to the property is undercut by the time, energy, and financial cost involved in making the improvements. The Mental Commitment Owning house represents a mental commitment that some of us aren't willing to make. Even though buying a house or condo does not necessarily mean keeping it for a lifetime, it can seem that way.