Questions about your lifestyle are not relevant to your mortgage application. Any questions about your lifestyle, such as when you plan to retire, are not applicable to your loan application. I am not sure why the lender asked you these questions but my only guess is that the lender is trying to be personable or perhaps match you with a specific mortgage program based on your financial goals including your time frame for owning the home. Mortgage lenders are not required to ask lifestyle questions and you are not required to answer them. The only questions you are required to answer and information you are required to provide are outlined on the loan application.
If you do not like the way you are being treated by a lender, including the questions the lender asks, we recommend that you contact other lenders for your mortgage.