<prompt> Human: Im one-year in to my 5-year term on a variable mortgage rate 2.55. Ive been paying double payments for most of the year, so Ive dropped the original amortization period from 180 months to 138 currently remaining. Im wondering if it still makes sense to be paying these double payments, or, at such a low interest rate should I be putting that money into smarter investments.Any advice?  <response>: No right answer, I do a bit of both mortgage pay down taxable investing via index funds after maxing out my tax deferred accounts, of course. 