But I would guess, like most creationists, you want to specifically belabor the fact that evolution is "only" a theory, but don't want equal, or even comparable, emphasis placed on the fact that photosynthesis (just for instance, among the hundreds of theories invoked, but rarely actually specified as such, in the typical secondary school curricula) is also "only" a theory.
This is a good point you've made, but let me interject a difference in our thought process.
I really think it comes down to what you "Beleive." There is a sense of faith required whether scientist like it or not. The Theory Of Gravity we see the effects of every day so that's not hard to believe, however the Theory Of Evolution as far as a whole species change has not only never been observed, it also makes no sense from what evidence we do find and is speciously void of many inner linking connections one would logically conclude should be availiable to research. Does this mean evolution does not exist? No, but science has yet to show a valid observable instance and makes leaps and bounds to try and justify it's conclusion which I, and most find unreliable.
If science and others with agendas were fully honest about evolution, it would simply admit, there is evidence, but not enough solid evidence to make evolution a fact.