not required but highly recommended..........
A homeowner buying real estate with a mortgage or cash has just as much risk. You either buy title insurance coverage or you don't.
Remember, in a mortgage transaction the lender is only requiring that you purchase a loan policy. You can waive owner coverage if you choose.
Why under any circumstances you would allow an asset of that size to be uninsured is beyond me but it's your choice. Make it a good one! Be safe. Be happy.