"Experience of life" is too vague and wavy-handy - experience of what in life specifically?
Well, experience is something we all have, and in that sense, experience across a whole range of topics is very important as it provides us with a balanced outlook on life. As such, I wouldn't rule out any experience, because that is simply limiting the scope of reality. Sometimes those experiences will be positive, sometimes negative, sometimes neutral.
That's right. Where's the equivalent with religious beliefs? You claim that doubt and questioning are important elements of Christianity - how do you know if/when your doubts are resolved one way or the other and how do you know if/when your questions are answered? Remember that over in ScienceWorld these questions are easy to answer because there's a definitive methodology - where's yours?
Well, there is comparison - so we are told to test a teaching or claim against what Jesus taught - meaning that when, for instance, the BNP effectively claims to be speaking on behalf of Jesus and Christians as far as their xenophobic doctrine is concerned (or that of the KKK, or that of generations of Imperial staff and so-called entrepeneurs who looked down their noses at their Indian/N.American/African/etc counterparts) people can/could compare their attitudes with those of Jesus.
The same goes for groups who claim Christian support for sexual behaviour that does not fit the teaching that sex should only occur within the context of a one man/one woman marriage.
Good science makes testable predictions - if the hypothesis is put to the test and found wanting with regard to the data, it's not accurate. If it passes the test, it is.
Until, of course, the test is seen to have been faulty, or the person/people concerned have fixed the results. Or, new data is available that shows that what has been understood as accurate, isn't.
Interestingly, this is very similar to much of what has happened within Christianity over the years. Certain influences have imposed attitudes on the Church, even though those attitudes run counter to the teaching of Jesus. As people have begun to feel confident and therefore able to challenge these assumptions so those attitudes have either been seen to be erroneous or open to debate.