One final attempt to try and get through to you guys

[TaraJo]

My dad is a wonderful man. He is incredibly generous to me and our family,

I'm sure he is a nice person. But being nice doesn't mean he's correct. Consider this for a second:

he has helped me and helped find people to help me through my severe OCD,

Good for you. My brother had crippling OCD (and I don't mean this pop-culture "I'm-afraid-of-dirt kind of OCD; I mean that it was interfering with his life so much we brought him to a doctor and he was given a clinical diagnosis) throughout highschool and his secular mother found secular doctors and medications and therapy to help him get through it.

and uses his chruch to reach out to prisons and donate money to needy causes.

Again, look at the pic above. There are secular charities out there who do a lot of good and don't do it because an invisible friend is looking over their shoulder. I might also mention that there are a lot of really shady Christian charities out there, who take money and instead of using it to help people, they just preach to them.

He's been there for me my whole life. Should I trust him, or a bunch of random joes on the internet who says me and my family are idiots?

Don't trust me; trust facts. Trust evidence. Trust science. Even your Bible admits that humans make mistakes, so how are you to know that your father isn't in error when he tells you to be a Christian?