Listen to me.
Us loving Him is for our benefit, not His.
He totally shows Himself and "hangs out" with us. He is omnipresent and panentheism (and other non-dualism) totally makes sense.
"Heaven" and "Hell" are terms from, mostly, parables. Do not let them bring you down, do not let them make you get the wrong idea about God. He is not evil.
Temporary time on Earth isn't necessary, but when the cosmic coins are flipped, look what happens.
Why is faith so important? Every person will give you a different answer.
Is it a "test"? No. "Test" implies a preparation, a tester, students, etc. Not so. Rather, life simply is, well... life! To God, it's all the same how we live; He is almighty! The highest! He doesn't actually feel human emotions and stuff. Maimonides will tell you. All these "rules" are purely for our benefit. It's like someone saying "don't cross the road when the light doesn't permit it". Are they testing you? No, just offering a useful, helpful tip.