Title Insurance is a 3rd Party service paid at closing that protects the Buyer and Lender from any previous liens and/or judgments on Title of the property that would have to be paid for at a later date. These liens could range from unpaid back property taxes by the previous owner to them not paying the roofer for repairs made years ago to past due Homeowners Association bills. The last thing you want is to pay and/or deal with an expense after closing, especially one that does not belong to you.
Not to mention Title Insurance verifies proper ownership. Most of the time the Seller pays for the Buyer’s Title Insurance Policy, especially when the Buyer intends to live in the home they are purchasing.