Some folks are not denying creation, they're only saying it had to have taken longer than six days. Now that begs the question, WHOSE days? Are we counting human days or God's days? I frankly think it is silly to try to put human limits on God's actions. His 'days' may be millions of years long.
I don't have a problem with the idea of evolution as adaptation of species to their particular situations, I just don't believe life evolved into its myriad forms out of one amoeba. I could be proven wrong, and maybe that's how God did it, but the hard core evolutionists haven't proven their contention. There is more evidence for the idea of life appearing along the lines of the creation stories in the Bible if you think in terms of each of God's days being millions of years long. Look at the sequence of creation sometime and compare it to the dating of the apprearances of the stars and planets and different forms of life on this planet and think about it.
Except in Genesis, the order of "creation" does not hold up to scrutiny.