Yes, I buy porn. I own a small number of DVDs featuring my favourite stars, I've paid for clips4sale clips and OCSM sites memberships to support girls I like, and I have had/have memberships to studio sites - even if it's just the occasional trial month here and there - so that if I download a whole scene, I download it from source rather than ripping from a tube site.
I'm quite fond of putting my attitude into simple words - I like porn. I pay for the porn I like, so that the people that MAKE the porn I like, can make more of it.