This classic game might seem boring to some, and there are other dexterity games that do the same better. However, Jenga is very widely known and feels less intimidating to non-gamers than e.g. Villa Paletti. It's familiarity is it's strenght - and it can be a gateway to other games.
How high can the tower be built? That depends on how rock solid the players' hands are. This is a game that the whole family can play, just be sure not to play on a wobbly table. That caused some difficulty a few times. I enjoy the tenseness each time someone has to take a piece out.
This is a fun game, easy to learn, once the hand is a little steady any age player can be competitive. Fast to learn, takes a few minutes to set up. Younger kids really love this even when they are the one who makes the tower fall