What proof do you have of that, the goal of our genes is to keep us alive as long as possible, the same way a tiger seeks out his prey to keep alive. The reason why we die is due to the earth not being able to hold us,its a self survival mechanism.
As semi-pro waster has already mentioned (see his post above), it ties in with the idea of the selfish gene (this theory is how Richard Dawkins revolutionised evolutionary theory, and it follows should be held as a respectable scientist for his work in this area). Think of it so that genes are passengers and that individuals are vehicles. The gene is not interested in the vehicle as long as it can get to the destination. This idea of the selfish gene is taken for granted in most evolutionary studies and virtually all scientific observations support this theory. I will give you an interesting example:
There is a species of mosquito (
Aedes) that has a genomic conflict. As you know there are X and Y sex chromosomes that determine sex in an individual (XX is female, XY is male). The Y chromosome doesn't get passed on into female offspring (XX), and as a result the Y chromosome in Aedes has evolved to break down the X chromosome as meiosis - in other words, the Y chromosome
kills off the X chromosome to ensure that all offspring are male!
This is obviously not in the interest of the individuals or population as a whole - an entirely male sex ratio will lead to the species being extinct, but the Y chromosome doesn't care. Evolution is short sighted, and genes don't give a damn about any other than persisting.
It isn't a concious strategy and anthropomorphising it with terms like "care" and "goal" is slightly misleading but possibly easier for us to understand.
Indeed, it is difficult to talk about genes without implying they have concious thought - obviously this isn't true and is something I take for granted when I am explaining things to make it easier to understand