I could get used to touch gestures if they were more consistent and tolerant enough for wrong inputs. It may work in one app but not another. One app expects me to swipe from left to right to go back, another wants me to swipe from top to bottom for the same thing. It may mark an email as unread if I start the swipe a pixel too far away from the screen edge. On Android swipe gestures may vary even on different phones from the same brand. In iOS, tapping the top edge of the screen means scroll to the top. Except in the Photo app, where it means "scroll to the top of the current section, or almost the top, or do nothing and make the user guess if they just tapped the wrong way".

Meanwhile when there's an X button or arrow to the left I always know what it's going to do aside from one or two overly creative Android apps.