I don't understand why my roth ira contribution is not deductible

[macuser_22]

Because it is a Roth and not a Traditional IRA.   Only Traditional IRA contributions are deductible.   Roth IRA's are always after-tax money which means that you will not pay tax when you take the money out,  since you already paid the tax.  With a Traditional IRA the money is taxed when you take it out.