I lie to everyone all the time
Do you get some sort of benefit for lying like that?
No one would tell me what to do if they were lied to.
There is no valid reason to just lie to people like that. Even if you think that you're getting something back from it, it's wrong to flat out lie to people.
What harm is there to it?
You could cause harm to your friends. They won't be able to trust you anymore. You shouldn't lie to people just because you can.