A lot of people love satelite TV, and I can understand why. What I can’t understand, though, is justifying such an expense every month.

I was looking at a row of houses built by Habitat for Humanity and started wondering. I’m not here to make judgment calls about these people’s habits, but I plugged in some numbers you and your friends might want to think twice about.

If you paid an additional $50 toward your mortgage every month, a thirty year mortgage could be paid off in 24 years! (I assumed a 7% interest rate, which is higher than you want for your own home.) 24 years!

Think about what a few extra bucks each month could do to any loan. Interest is a powerful thing, especially when it works to your advantage. Know of any other powerful examples?

(NOTE that some lenders don’t allow prepayments without penalty, so read the fine lines of the contracts you have signed.)