i sort of saw a faerie once a few years ago. i was laying under a tree inside a circle with a couple of my friends [two of them were wiccan] well, i kept seeing a purple orb of light out of the corner of my eye for a spit second. eventually my pagan friend said she was seeing something too, so we lite some incense and pulled out some candied. after a bit, in the smoke, we would see a tiny arm, or a wing, once we saw the whole figure. [by in the smoke, i don't mean the smoke looked like a small person, it was as though someone was standing in the way of the smoke, so it went around]
but that was a one time thing. so i do believe in faeries [i also believe in dragons although i've never come into contact with one] they're just solitary and keep to themselves. just practice and leave offerings, one day you'll meet one. but again, it comes down to personal believe.