That seems to happen when Enjolras ventures to trot those out, he's starting to notice. It's kind of bemusing how easy making things like that happen really IS, when you get down to it.

"Giving up...no. I do not think i much like it either. Or anything else...I can see WHY it might happen, but I've never really thought it a solution either, somehow." In his case, he doesn't quite count seeking his death during the rebellion in the same way. That had something else attached, even though he expected to die.