Firing everyone else from your band is called quitting, just so you know. It's not your band unless you're the only member. Or unless you're Axl Rose and you actually legally own the name, but you're not so don't worry about it.
I mentioned Axl Rose because he is a classic example of what LSD (lead singer disorder) can do to a person. I could have used myself, but you've never heard of me. Most people haven't heard of me, hell even I haven't heard of me lately, so Axl is the better example. But I'm a guitarist / lead singer myself, and I know what tripping on LSD is like. And if you're like me, you also started the band.
It's not fair when you're the vocalist, because you have the added pressure. Like it or not, the lead vocal is the face and voice of the band. Nobody cares if the lead six-string has a weak voice one night, nobody cares if the drummer has lousy hair, and don't even get me started on friggin' bass players. (How many bassists does it take to change... no wait, I said I wouldn't get started.) If the voice of the band screws up, the whole band screwed up. Added responsibility should give you extra ego room, but it doesn't. You get all the extra pressure, and you get first pick with the groupies (come on, you know I'm right), but you're not allowed to have an extra ego. Even though you kind of earned it.
But unfortunately, the rest of the band will never see it that way. They're still cheesed off that they get sloppy seconds with the groupies, in fact. And they're right: Lead singers do have massive egos. Don't take my word for this, ask Axl. Or Vince, or Halford, or Snider, or Ozzy, or... you get the idea.