Wow. This thread is so interesting to me, as a Muslim.
I've seen scholars say that atheists are half way to God as in Islam the first pillar of Islam is the declaration of faith. The first part is 'There is no God...' which follows with 'but Allah'.
I agree it is comforting knowing we will see our loved ones in the next life. This world is a huge and difficult test for a believer, that's why generally no matter what the world throws at us, we try to remain upbeat. We have a detailed description of everything in the hadith (sayings of the Prophet peace be upon him) on any subject, especially life after death. I recommenf reading it up.
I don't go to the Masjid (mosque) hardly ever. We can pray from home or anywhere but the Masjid is a place where people of all races, wealth classes etc stand side by side in congregational prayer 5 times a day, showing that none of us are better than the next, no matter how healthy or wealthy.
However even with me praying at home, I know there are a billion other Muslims out there who are my brother/sister in faith.
We have several sayings about gossiping/backbiting and the severe punishment for it. Being there for humanity is so important and going behind someone's back has real consequences.
At the end of the day worshipping God reminds us of our short stay on earth and life after death, eternal Paradise for being good.
Honestly without it I'd be lost.