I am amazed by all of these ads and advises of YES it is time go for it, make bankers rich and die in poverty wow, Do you know that if you have a 30 Years loan, spent 10 years then a smarty mortgage company called you and said, "Hi, do you want to save a point, will charge you 4% only instead of that 5% you pay......make the math if your monthly mortgage is $1000 to make it simple ($1000 x 12 month x 10 Years = $120,000.00) just say good bye to it, and start from the beginning of a long 30 Years loan again, always remember the closer you get to the end of the loan the more you put in principle less in interest....they don't want that....be smart, if it is not a complete necessity do not do it, what you can do is pay more in principle to shorten your mortgage paying period, that is the advise.