Why people pay someone else for do something ?

It is obvious when someone pay someone else for do something is because this person don't want to do it. But why she / he don't want ?

 

I think simply that people are lazybones. But perhaps can be also because you don't want to do this activity because you don't like it, but you are obligate to do it so you pay someone else. Or because is illegal but it is necessary to do it. Or simply for time. Yes, time is money and money can give you time.

 

If someone pay someone else for bring his or her dog walk is simply for win time and perhaps she or he like to walks his or her dog but we have one life and sometime we have to choose what thing we prefer o do.