They are:
Avoiding Withholding Tax: Without an ITIN or SSN, you may be subject to higher withholding tax rates on income earned in the USA. An ITIN can help you reduce these with-holdings.
Opening Bank Accounts: Some banks may require an ITIN for non-residents to open a bank account, making it easier to manage your finances in the USA.
Rental Agreements: Landlords may request your ITIN when signing a lease agreement, helping establish your identity and eligibility for renting property.