"All men pay for sex in one way or another" Is this true?

I've seen plenty of guys make this argument and there is some truth to it. Guys often pay for first dates and are normally expected to give great (which, in practice, means expensive) gifts on days like Christmas, Valentine's Day or birthdays. Or anniversaries. Guys are normally the 'breadwinner'.

All these things are clichés but most clichés have a grain of truth to them.

I'm starting to believe that a lot of male-female interaction is (possibly subconsciously) just a money for sex transaction.
"All men pay for sex in one way or another" Is this true?
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