our state of consiousness changes when something is affecting our physical body,
for example when you take drugs the way you think changes. therefore there is a relationship between our thoughts and our body. Before our physical bodies existed we were not yet thinking things. and it is logical to conclude that our thoughts will cease to exist when our physical bodies cease to exist. therefore our thoughts need a physical body to exist.
The fact that currently there exists a connection between what we call our physical body and what our mind feels does not prove that such a connection will always exist, or that it will not be modified or negated when we die or at any other moment.
I would hope to a degree altruism was an evolutionary by product of survival, otherwise this planet wouldn't be as populated as it is. But this post modern context we live in values the 'main stream' for information and makes us doubt ourselves to think for ourselves. 'Self- Awareness' gets harder by the day when people are constantly bomabarded with information to *like things when you probably don't need to, want to or know there is no point to it.
*This is a reference to the scourge of facebook 'like' boxes that seem to be permeating through out the web and all sorts of advertising.
I personally think our technological advancement and our increasing interconnectiveness and interdependacy will eventually lead us, as a race, to become a singularity... I mean, now the ability to exchange information instantaneously over large distances is making we think more and more as a group and less and less as an individual, a process which will probaly only become stronger as the culture adapts and the technology continues to evolve. Our biotech will eventually reach the point where we can improve our bodies and brains with eletronic components, letting we exchange information and ideas to the brain level. So we will become less and less limited to our own bodies, and the differences we have with others will also slowly dissapear due to exchanging ideas at a brain level, until we all just merge in a single being.
I personally dont think thats a bad thing, as scary as it may sound it feels like our natural evolution path for me, a natural path to take in our journey through existance.