The thread on leaving Christianity seems rather active, and I don't think Christianity is the only religion that has people leaving. It may not even be the one with the highest rate of leaving.
That said, there are two basic ways to leave a religion ... quietly, or slamming the door on the way out, with a gigantic fuss. I would think most leave quietly.
The reasons? many, obviously, but this may bring up more. In the case of my children, who for all practical purposes, have left Hinduism ... quietly. The reasons vary, but the main one is that nothing about it really captured them the way it did with me. But I'm fine with it. They kept the ethics implanted, and are all decent citizens.
I know quite a few folks who just sort of quit going. Interest waned, it didn't really matter, etc.
Thoughts?
In my case. I left Islam for 4 or 5 years, because I loved people to the extent I could not handle the concept of hell. This was a poem I wrote way back:
Say Islam was true
And I was a Jew
Would God torture me
For what I did not see?
In the name of justice
Pain as the flames burn
Days turn into weeks
Weeks into years
All for disbelief
I will have no relief
Billions of years pass by
Justice is still not served
All good is rejected
My good actions are ineffective
And I would not burn if my mind was reflective?
This is the creed that I use to follow
But now I realize such a creed is shallow
Whomever desires other than the true religion
Let him burn in the fire?!
As oppose to loving him, having compassion for him
Appreciating his good,
Honouring his struggles,
Being his friend,
No! No! That is not the way!
For God is enemy of those whom disbelieve!
Friend and Protector of those whom believe!
All are reduced to the lowest of the low!
Except - of course - for those all special and great believers!
Everyone but them, to hell they go!
All astray souls - be prepared for increasing burning!
For none but the guided will have peace!
Is that the remembrance that is suppose to bring ease?
Peace you say?
Bowing Five times a day!
To a Lord whom will watch humans burn in agony?
Having the believers laugh at them for the sake of an irony?
A Lord whom tortures everyone but the righteous guided?
A Lord whom loves not the disbelievers!
Hates them with a strong hatred!
And all this teachings is suppose to be sacred?
Most Merciful, Most Compassionate is he called by all!
But threatens all to hell, except those whom respond to the call?
If you have to be righteous to enter heaven.
What mercy was ever spread in creation?
Or is God accepting regret from a righteous person
Truly a show of ultra mercy, forgiveness, and compassion?
As if it's not justice to accept his regret and reformation!
At the end, O Lord of Islam!
If you are to burn me for this heresy
Then you truly were not a Lord of Mercy.
Not Worthy of Worship, not worth anyone's time.