My paychecks aren't any different than yours, and from this year, about 20% of my gross income goes into taxes because now I have to pay social security and medicare taxes on top of federal income tax. Thank goodness, Texas doesn't charge state income tax!
You're paying a lot less than many are, so stop complaining and get back to work. Like others have said - if you're paying more than you should be, you'll get it back when you file your taxes.