In your opinion what causes christians to believe in Jesus

[Sheldon]

"the Seventh-day Adventist Church generally believes in a young earth, typically estimated to be around 6,000 years old. This belief is rooted in a literal interpretation of the Genesis creation account and the writings of Ellen G. White, a co-founder of the church. While the Bible doesn't explicitly state the age of the earth, Ellen G. White's interpretations and writings have shaped the church's understanding and belief."

If the universe is only 6000 years old, how is light visible from stars, that are billions of light years from the earth?

Maybe a deity created the light en route, just to confuse us. 

Good reasons to believe something, would not in my opinion, include denying objective and irrefutable scientific facts, but hey that's just me.

Certainly a worthwhile question, but I'd rather not see this thread become a debate about the beliefs of Seventh-day Adventists.  But that's just me.

Not exclusively no, but they are Christians, so their reasons for being so are apropos I think. It's a problematic question, as the generic term applies globally to over 45k different sects and denominations of course, and even in the US there are hundreds of versions of Christianity.

If the question looks like derailing or side-tracking things, we can move on, though to be honest, I doubt we will even get a cogent answer.