<prompt> Human: Heres my situation: I have two mortgages. The first one for my principal residence the main mortgage and the second one for a rental property I own the secondary mortgage. Im considering paying off my secondary mortgage. I have enough cash on hand to allow me to pay it in full while leaving me enough cash for a rainy day fund. Also worth mentioning, i have a healthy exposure to the stock market already. The secondary mortgage has a rate of 3 while the primary mortgage has a rate of 3.7. I see my options as:i do nothing and keep the extra cash on hand to augment my market exposure in the event of a crash - this has been my strategy for the last few years, but the market crash hasnt materialized...ii pay off my secondary mortgage, although I hate paying off a deep in the money mortgage 3 rate. The benefit of this option is that it increases my flexibility going forward one less mortgage to pay and increased free cash flow from the rentaliii pay down my primary mortgage, although this isnt my preferred option since I could only pay down 10 of the outstanding amount, which will save me some interest expense in the long run. What are your thoughts about the best option and why?Edit 1: clarified that Im already invested in the stock market.  <response>: do nothing and keep the extra cash on hand to invest in the market in the event of a crash Timing the market is a bad idea.this has been my strategy for the last few years, but the market crash hasnt materialized...because of this. How much money did you leave on the table because you werent in the market?You have 3 and 3.7 mortgages. Keep them. Read about investing and learn. Invest properly and safely, not market timing, not individual stocks. 