The best reason for "flying the nose" is it's more intuitive when you get moving instead of hovering. Eventually you'll need to have the heli's frame of reference governing your control movements, and every other flight action is relative to the direction the nose and rotor disc are pointing. Just control it like driving a car, and "steer" left and right with the left stick.

BTW, don't try to jump to nose in. You'll get it quicker and with fewer crashes if you gradually inflate a figure eight from simple side to side motions: first step is moving the heli left and right, tail in, until you can keep it going slowly and smoothly from abot 20 feet to the left to twenty feet to the right, at a constant speed and altitude. This will teach you how to hover up to almost completely side in both left and right, but you won't even realize it while you're doing it <g>.

Once you have that down to a science, then start turning it a bit toward the direction it's going-- left when going right to left, and right going left to right. Keep at that until you can turn it directly into the line of travel, so you fly left to right, turn 180 degrees left, fly right to left, turn 180 degrees right, then left to right and so on, still slowly and at constant altitude.

When you're comfortable with that, the inflating starts-- gradually, instead of just piroing at the end, keep moving forward a little as you turn, and turn a little bit more at each end, slowly making the left-right and right-left legs push out so that instead of the same line they are two lines that cross. Now you're flying a figure 8.

The above will teach you more about orientations than just trying to hover, and it will also get you started in FF in different orientations instead of just the hover so you don't get stuck. The end of this set of exercises is when you can fly continuous steady circles in both sides of the eight, and when the heli crosses the center it is flying directly towards you. If you have been concentrating on maintaining a constant altitude and (slow) speed, then at that point you can slow to a stop and hover nose-in without any additional training.