1. Pisces
2. Yes I believe in astrology.
3. c - Of course I believe in the information gleaned from natal charts, and while most horoscopes are made up, they are often still based on something and some are more poignant than others. They're too simple, but can be helpful to certain individuals at certain times in their lives.
4. I'm not entirely sure yet. I mainly study tropical astrology and it seems to be accurate so far, though so does Vedic at times. They share the same aspects and house placements though as far as I can tell, so both would still contain their insights. I think the Ophiuchus thing is a bit useless, personally, but I still can't be sure about that either.
5. No it does not. Choose first, reflect later - we learn best this way. I think any other way of living would almost defeat the purpose of being alive at times. I also think that sometimes we love people we are incompatible with, or certain people arise that we can learn something from for a reason. We should always be open.
6. I don't really like the whole percentage thing as it doesn't entirely make sense to me when discussing something like this. Astrology is interpreted in many different ways for one, and it discusses our whole inner being, something which I think takes time and experience to really understand on an intuitive level. I don't feel that astrology should be seen as something with a start and finish, it is not linear by nature. If I am going to apply percentages to astrology I would say that astrology, at its core, is always 100% accurate. It claims what it claims and leaves the rest to you.
**Edit: chain... I think a better quote for you would be, "What can be asserted without proof can be beaten like a dead horse". You can quote me on that one.