You worked long and hard on your mission statement, so of course, you don’t want it to go to waste. It’s only logical you’d put it on your website, right?
There is better content for your homepage.
Most visitors will never get beyond that point of your site so make it count.
Instead of your mission statement, I recommend including a concise and direct selling message that outlines a distinct competitive advantage. If possible, use professional photography or tasteful stock imagery that helps tell the story. Be sure to include some sort of call to action.
Visitors to your site are there to learn what’s in it for them; give them what they want.