For me it is probably reason and simplicity.
I like things easy to understand that are logically consistent. This, of course, means things like the scientific method and placebo controlled trials. It also means things like the Law of Attraction, compassion and love.
If somebody tries to propose to me something and insist I must use faith to accept the belief, then I tend to assume that the person either has little basis for their belief or are trying to deceive me in some fashion. I strongly believe that using our mental capacity to understand and discover the world is one of the greatest goods that we can do. How does throwing out that capacity help us to reach our potential.
When it comes to supernatural abilities, I also question the whole concept. If such abilities actually exist then that would mean that they are part of nature and would no longer be super. They would just be another ability that some people possess and others don't, though there would be nothing special about them such that if in the presence of a doubter then all the evidence of these abilities disappear.
If I assume that the world is reasonable, what is reasonable to me?
Setting and working towards goals, strikes me as simple and realistic as many people who have achieved great things either consciously or unconsciously behave this way.
It seem reasonable to look out for myself and my family.
It seems reasonable to st