There's a difference in the individual level and the species level. An individual does not necessarily have to be concerned with direct propagation to particip

There's a difference in the individual level and the species level. An individual does not necessarily have to be concerned with direct propagation to participate in propagation. A bee that kills itself stinging something that is attacking the hive potentially increases the overall survival of the genes which it shares with the hive, even at the expense of its own particular genes. An individual human who assists in the aid of other adult members or children in the group, even though they themselves do might not mate successfully, does something similar. It is all-consuming in the sense that it is fundamental to life by definition. (Unless we are to posit some organism arising from proto-life and just 'hanging out' until the end of the universe.) And it is the second half fundamental to evolution -- the other being death.