depends on your gas mileage. in my truck that got 11.2mpg is was worth it to ride for the summer.
gas saved more than covered the payments, the insurance and the extras.
All the payments and insurance and extras for the entire year, or just the summer? The payments and insurance continues 12 months a year, but the gas savings can only be counted on for the riding months. Of course, the number of riding months varies by location.
I'll say it again ... if you want the bike and can afford it, then get the bike. But you are almost certainly not going to save enough money to actually come out ahead. It might come close or even pull a little ahead, but it's not going to be enough make a dent in your finances.