My dad forces me to go to church and I'm going to yell at him.
Is it safe to assume that you don't enjoy church?
I've been going to church for so long that I'm sick of it and could kill myself.
I don't particularly think you should yell at him about it. Rationally explain that you don't like church and forcing you to go is pointless because it's irrelevant to your life.
I just think that this is the perfect opportunity to yell at him.
Yelling at your dad isn't good and will probably make him put his foot down even more when it comes to you attending church. You're more likely to achieve what you want and get him to understand you if you approach the matter in a calm and respectful way.