We mourn when a loved one dies, even Jesus gave way to tears, even though he knew he was going to bring his friend Lazarus back from death. Jesus in speaking about his death compared it to sleep with his apostles. A person who is in a deep sleep is not conscious of their surroundings, and those who have died are not conscious either, they do not feel pain, they do not feel lonely, and cannot interact with anything. Time comes to a standstill with them. Ecc 9:5 says of the dead: The dead know not any thing KJV.
The truth sets us free Jesus said, so how do we benefit from knowing the condition of the dead? Some cultures try to appease the dead thinking they can harm us, but we Christians are set free from that. Some religions teach that they are kept alive and might be undergoing torture, but again they simply are dead, not conscious of anything. Some believe you can communicate with the dead, but in reality if we successfully conjure up the dead, it is not those dead loved ones, rather demons, and Jehovah warns us about that Deut 18:10-12.
What is a real comfort to us that perhaps realize our time is close is that Romans 6:7 brings out that when we die we are acquitted of sin, and John 5:28, 29 points out that everyone who is in God's memory, and that includes all who have not sinned against the holy spirit, (another topic, but very few have this judgment) will be brought back to life in the resurrection. Another great point, even if a thousand years pass, to that individual it will be instantaneous, as they are no longer conscious of time either, just like waking up in the morning, only to a wonderful new world. Isn't this good news really a comfort?