Is it still worthwhile to deduct my personal contributions from my taxable income?
No , deducting personal contributions isn't advantageous for everyone , as it's a tax deferral ; you'll be taxed upon withdrawal. It all depends on your marginal tax rate (MTR). The more tax you pay, the more beneficial it becomes (below 30% MTR, it's not necessarily advantageous) because it's estimated you'll pay less tax in retirement due to a decrease in your income.
In other words, if you currently have a low marginal tax rate (MTR), the tax savings will be small or even zero.