What are the advenges and disadvanges of sport? (min.80 słów)

The main good point of taking part in sports professionaly is money. In some disciplins -like football, tennis or box - amounts of incomes are extremaly enormous. This motivates sportsmen to improve their qualifications and spur amateurs to start treating sport as a future job. Money coming from advertising in mass media and sponsoring helps to invent, produce and buy better equipement. Furthermore it gives the possibility to develop scientifical knowledge about sport disciplines. But, on the other hand, commercialisation has often negative influence on athletics. Many organisations and fans see it as an attack on the central ethos of sport. They claim that competitions should be performed for their own sake and for pure enjoyment, rather than as a means of making money. Actually, in great part they are right, because often fair and square competition looses its importance in confrontation with buisness and cash. That can be observed for instance in selling matches or box fights, or when footballers are not playing in national teams, not to loose money from the club.  Apearance of sport in mass media (for example TV transmissions), caused by a great deal of material profits standing after it, help to promote phisical activity and introduce diferent sport disciplines to larger audiences. However, the increase of professionalism, as well as attempts to resist its spread, have caused major problems for some sports. Few of them, even very interesting (ex. English cricket), loose popularity due to their not commercial status.