It is because they do not understand that such wonderful huge machines were created by a creative engineering genius to help a person to facilitate huge labor-intensive work, for example, in the construction of hydroelectric power plants. when digging canals like coal mines, Panama, when you need to move, load, transport large masses of soil, coal and other cargo. These machines help get the job done faster and save a lot of time, and as Americans say, time is money. Glory and glory to the creators of these amazing huge machines!!!! If such equipment was available when the Bratsk Hydroelectric Power Station was built, then 5, say, not a year, but 1 or 2 years. I really like Caterpillar, one of the American companies that produces this type of equipment. The diesel engines of this company are super: powerful, economical and pull very well uphill even in direct 5th gear when the bus explodes from the passengers.