I have 32 10's at this point... <_<
I remember when Minato and I would seesaw back and forth between who would have more 10's... XD But the last few seasons had a lot of shows I really enjoyed, including the most recent 10-scorer that actually made it in my top-5 anime, which is super rare since my top-5 is something I consider to be very solid.
I'm pretty generous in ratings, too. And like some people here, few things that I managed to finish get less than a 6, since in general, if I'm able to finish it, then it shouldn't be that bad. And the fact that anime is usually something that takes great effort from a lot of people working together to create, most of them shouldn't deserve a low score. (There are those few exceptions, of course, where it's just either horrible or lacked any effort.)
And how a series concludes is VERY important to me, as well, so how it ends alone would likely make me bump the score up or take it down one level.