Ah, one of the last great injustices in the world.
Though these elements are from previous generations, not mine, I grew up believing in paying for the date, opening the door, pulling out the chair, tipping the hat (who wears hats anymore?), etc. You know, old fashioned gentleman stuff. I still do these things today though I've been off the dating market for over 16 years.
But, in today's world. If I were a young man dating. I would likely not be willing to pay for everything. It seems to me that many young women are absolutely spoiled and want to keep it that way. You can bet, if she expects you to pay for everything and constantly buy her gifts, especially expensive items, she'll be the one running up the credit cards and demanding finery if/when you are married as well.
Find someone sensible. If you foot the bill and pay for everything, let it because you want to, not because she insists or thinks you ought to. If she cares for you, her demands will be for your time and affection, not what you can pay for or buy her.