VA is instituted with something called a recruitment rule where you have to be able to recoup the cost of the VA IRRRL in 36 months.
When you drop the interest you need to also look at how much are you going to be saving every month versus how much does it cost.
If you are not going to sell the home in less than 36 months and probably going to stay in the home for more than three years, there is no other refinancing program better than the VA interest rate reduction refinance loan for you.
If you are retired and this is going to be your forever home for the rest of your life, it absolutely makes sense to refinance and save a lot of money.
Your loan officer can help you to go through the amortization schedule and let you know how much you can save over the life of the loan.