The good things people point to about organised religion - having the comfort of being part of a community, getting together for a meeting/chat/sing-song/heart-to-heart - all these are great things. But can be achieved without the need to belittle and exploit people and make enemies of others. Any "comfort" people get from imagining there is something after this life is a brittle, cruel joke - no different to mediums and spirtualists who prey on vulnerable people. Again, that comfort comes with a cost - some people are the chosen ones, and others are automatically demonised - it's not a level playing field. Mostly religion comes down to geography and family - Where you were born and who to. Literally a postcode lottery for the vast majority. Wrapped up with religion are feelings of family and community duty, so even if people personally don't believe, they might often still go through the motions to keep up appearances, which would be fine except that they are still counted amongst the believers and thus strengthen the whole rotten infrastructure.
Even believers aren't truly fooled by it in their heart-of-hearts because no one really knows and beliefs are not facts. We're living in a time where feelings and beliefs are seen by many as more important than provable facts and that's fucked up - religion gives some kind of dellusional legitimacy to hang peoples fears on - as if some vague, cherry-picked, dusty book cribbed from prehistoric mythology proves anything other than the people who wrote it knew barely anything about the world around them. The wind is a demon, a drought is divine punishment. It's nonsense and a cancer on humanity. It's not just holding us back, it's dragging us down and that so many people are gleefully cheering that on is sick.
People can imagine and believe whatever they want - but it shouldn't be given credence. It shouldn't be given tax breaks. It should be "ok, that's nice, well on to the real matters of the day...."