What's the deal with hotel pillows?

I recently returned from a trip where I stayed in three different hotels over three consecutive nights.  All three hotels had crappy pillows.  This strengthens my theory that all hotels have inadequate pillows for my sleeping needs.  Now I realize that this is just a personal preference as some people might like flat, mushy, unsupportive pillows.  But why do ALL hotels think that ALL people like the same type of pillow?  That's just not considerate.  Hotels should provide a variety of pillow types in each room.  They already put four pillows on each bed, so why not put four pillows of various firmness so guests can sleep more comfortably on a pillow that suits their needs?  I don't want to be that guy who brings his own pillow when he travels, but these hotels are leaving me no choice.  I know there has to be some of you out there who feel the same way I do.  If so, join the fight for pillow equality.  No more sleepless hotel nights because of pillow inadequacy.