"I've decided the Adventist Understanding of Life after Death is not correct -- I am convinced by other religions. Can you help?"
I'm not too concerned with what my church, or another church teaches - my real concern is what the Bible has to say. Let's quickly summarize that:
Eternal life is a gift of God - given to mankind at Creation. Lost when Adam and Eve disobeyed - "when you eat of the tree you will surely die" Gen 2:17. That's confirmed in the book of Romans (Rom 6:23) Wages of sin is death But the gift of God is eternal life.
OK: So if life - and especially eternal life is a gift of God - for what reason is he going to keep us on living after our physical death here on earth? The Bible teaches that: People sleep in death. Job 14:10, Daniel 12:2. John 11:11-14. They are unconscious: Eccl 9:5 -- they know nothing,. Psalm 146:4 -- His very thoughts perish.,
Why? - imagine Adam watching the suffering for which he was responsible. A mother watching her children making choices and not being able to influence them.
A much better scenario is the one God has given. 1 Thes. 4:15-18 NIV: According to the Lord's own word, we tell you that we who are still alive, who are left till the coming of the Lord, will certainly not precede those who have fallen asleep. For the Lord himself will come down from heaven, with a loud command, with the voice of the archangel and with the trumpet call of God, and the dead in Christ will rise first. After that, we who are still alive and are left will be caught up together with them in the clouds to meet the Lord in the air. And so we will be with the Lord forever. Therefore encourage each other with these words.
Then we can be reunited with our loved ones.
Greek/Christian thought in 1st century led into today's commonly held belief - but I have to go by what the Bible says.