Why is an offset iron easier to hit

When you look at the club head of an iron, you will notice that the neck or hosel of the head is positioned in front of the face of the club head, so that the clubface appears to be set back a little from where the shaft goes into the club head. This is known as ‘offset’ in the club and is mostly present in almost all irons but also is the case with some woods.
There are two advantages of this. First, the more the offset, the farther back is the club head's centre of gravity and the higher the trajectory of the shot. The centre of gravity being back will help the golfers in getting the ball airborne and get more height on their shots. This is also helpful in hitting the ball from bare or barren lies as well as useful for the player with a slow swing speed in hitting the ball up in the air.
Secondly, the more offset in the club head, the more time the golfer has on the downswing to square the club face to target. This is because, in an offset club, the club face is slightly behind the shaft and comes into the ball a split second later allowing the player to rotate and square up the club face. This is the reason some anti – slice woods are made with an offset as they help in squaring up the club face and reducing the slice on the ball