Theists: Why do you claim God's existence...?

Instead of claiming just the possibility of His existence? I mean yes, life is complex and amazing, but that doesn’t mean it’s the work of a higher power. It could actually mean something that we just haven’t found out yet. Science doesn’t know everything, and religion is its filler. I choose not to use the filler and simply say “we don’t know”.

Do you go as far to claim His existence because:
1. fear of hell?
2. butterflies in your stomach when you feel you do something good (normal), but you felt the same feeling when you accepted God because you were taught by church that it’s good?
3. to keep your morals intact?
4. to celebrate your religion’s holidays?
5. hope because you feel like if you claim His existence, he’ll guide you through trouble even though “God helps those who help themselves”, meaning you help yourself figure things out by talking to God like a child talks to a teddy bear?
6. it just sounds cool like a good story that you wish was real?
7. the majority believes in God?
8. you want to feel like you know everything and understand the world?
9. Christian pride?
10. you don’t know a world without God, because that’s how you’ve been taught since you were born?

Please, I’m curious and do not mean to be offensive. This question could go for ex-Theists too.
For me, an agnostic, it used to be 1, 6, 7, 8, 9, and partially 10, but religion was never shoved down my throat. Just because of 7 (majority believes in God), 10 (don’t know a world without Him) was partially true.