Yeah, this.For me, it's not more "Im a guy, therefore I SHOULD pay", rather this: Hey. I'm intrested in going out, finding out more about you and having some good clean fun together. If you want to go Dutch, ok I can do that. But, I would rather pay for it. I want you to not have a worry about taking care of a thing for the date, just enjoying yourself and allowing me the opportunity to share in your company for a while.
If it becomes a matter of male ego to pay, we shouldn't be having this date in the first place. If it's just "what men are supposed to do" it's a social obligation. BlessedByGod's reason is the only good one (that I know of) for insisting on paying.