Bhakti is not blind faith. Bhakti is Science.
I do my nitya Puja everyday because it is my family tradition and Puja/ Narayan Seva is my duty as a brahman. But I don't "believe" in Ishvar. I don't feel any "bhakti" while listening to bhajans or attending satsangs or even while doing my Puja - for me it is mechanical - a duty. I don't go to temples, I don't like the crowds and even when I do go I don't feel any "devotion."