Who Should Pick Up the Bill on A Date?

Should the man pay? Should the lady pay? What do you think?

My opinion
I'd prefer to go halves or even alternate who pays. Some ladies refuse to pay for dinner, others don't mind. Some men are adamant that they should pick up the bill and others don't mind halving the cost. It all depends really...

How do you feel about it? Should a guy always pay for dinner?