In regards to the after-life
In my book "Awkward Truths: Beyond the Dogmas of Science, Religion and New-Age Philosophies" (2004), I explained the somewhat unfortunate consequences of believing in an ideal, perfect Heaven, or a perfect spiritual existence.
It seems prudent to share some of those consequences, given current world circumstances and that many still idealize the after-life or various spiritual states (e.g. enlightenment).