Skepticism is not a philosophy of disbelief. Rather it is a philosophy that suggests that there is merit in examing beliefs. A skeptical view of the world allows for faith, in fact recognises that 'faith' at some level often underlies so-called scientific theory.
Skepticism does not lead us to the 'entire truth' of the universe, but it is discipline that allows us to better understand small parts of it. And for those parts that we want to grow or progress, skepticism is a tool to open the hood, check the hoses, replace the worn out parts, and lubricate the engine.