I know. I want to live it the way Allah wants me to - this isn't about me.Guess what? You get to lead your own life the way you want to.
The reason man is allowed to marry four wives is to protect all women. It is prophesied toward the end times there will be significantly more women than men in the world. Which already is and has been so in certain areas in the world.
I have heard similar to what you say from Christian apologists. It is nothing but lies to say Muhammad committed to such sin and weakness. Not that he was infallible - he wasn't, but this is way far from Islamic belief.