Two things Cayde happens to be a big fan of are technology and shooting, there isn't much of either planetside and most people don't take kindly to being shot at (even if they deserve it,) so even on the ship there aren't many opportunities to shoot things. Hence, his fondness for the simulations. It's not real, but it feels like it, so he'll take it.

The voice catches him and he stops on his way into the room, glancing back over his shoulder. "Sure am," he answers, eyes narrowed at the mask briefly but it's not the first one he's seen, "you doin' the same?"