I would never leave in the middle of any concert, let alone DT, for a bathroom break or any other break, unless the song truly annoyed me to the point of pissing me off, and DT has none of those. Usually, if a band I'm seeing plays something I don't wanna hear, that's the time I'll take pictures of the set and them performing. For example, I saw Avenged Sevenfold a few months ago and Syn did a solo. I don't like his soloing outside of their songs, so I took pictures of the set (which was amazing) and of him soloing.
But if there's 3 songs I'd have to choose to be not so enthused about them playing (excluding most of WDADU as I haven't listened to the whole album), they'd be Repentance, Hollow Years, and Another Day.