So often in rock (my main genre) the snare always hits on the second and fourth beat. They'll mess with the kick pattern, they'll ham up the cymbals, but the snare is always 2 and 4. When that gets changed up, it changes the song's whole feel, and usually for the better. It stands out more than any other drum, shouldn't it have the most interesting pattern? A favorite example of mine is "a kiss to send us off" by incubus. He does a good job of mixing up straight snare hits with different patterns, especially on the interlude section.