Maybe let's get back on topic now ???

Basically the question you need to ask yourselves is not how much/little you get paid for the endeavour but :

WOULD I LIKE 5000 OR SO PEOPLE WHO ARE (POTENTIALLY) BLISSFULLY UNAWARE OF MY MUSIC TO SUDDENLY BE EXPOSED TO IT ?

Licensing, even for free, makes sense on so many levels and can really boost your profile in certain territories.