It's much easier to boot the ball forward thirty yards than it is to carry it the same distance. The kicking game is the backbone of a rugby side. Good kicks set up the good pass or the good run. Used by a team defending its own end, it gets the pressure off by advancing the ball from behind the team's twenty-two meter line and out of bounds. If the ball isn't kicked too far, the kicker should be able to field it coming down or on one of its first bounces and continue upfield.
Variety is important.
Or a team that has been going to the openside of the field consistently may take the ball blindside to the chagrin of their opposition. These are all tactics that contribute to winning rugby. Once you learn the basics of rugby and give the game a chance, you'll be able to appreciate the finer points. There will be no doubt in your mind, however, that rugby is a delicate true blend of strength, finesse, speed and stamina.