Thank you all! I'm really grateful to receive these answers!

JamesNoBrakes, I'm sorry for your confusion! I aspired to be an airline(or cargo) pilot in a major air company like AA or Delta. And thank you for description of your uncle's job!
NTT5418, thank you for your answer!
Pogey Bait, I've thought about it. But I found out that there is no warranty that I will be a pilot, not only an officer who, as one said, will fly a desk instead of planes...

MaxRate and nader saeed: I'm thankful for your answers but want to ask you something:
"Don't let what you read on this site discourage you from pursuing your dream of flying. This forum represents a very small, but very vocal, group of pilots."
May be, this is true but isn't it also true that pilots earn 10-20k $ in the beginning of their career? And that this "beginning" usually lasts for 10 years? And that they have very unstable job? And education usually costs big money? Unfortunately, I can't accept these problems. But if I am not right with them or you have more positive information, I would be very glad to receive an answer from you!