My girlfriend and I tend to put money together and get something we both want/need.
I also believe I should do this, however sometimes don't you just want to do something romantic, something special?
Btw I was aware that valentine's day is only a tale from somewhere... but so is new year, christmas, etc. They're all just man-made and they're just reasons for people to share love, meet their families, give gifts to children, and ultimately get drunk...