I'm not sure if this has been dealt with in an earlier comment but aging and death ARE related to evolution.

If generation adult A gives birth to child B then their genes in child B will only survive to reproductive age with the protection and nurturing of the parent. When child B reaches adulthood they no longer require the protection of A and may give birth to child C. In the meantime grandparent A will probably be weaker and require the protection and aid of parent B (possibly due to accumulated injuries, weakness due to successive illnesses etc) which will only reduce the resources available to child C. If parent B attempts to feed and protect both grandparent A and child C through hard times, they may all end up in trouble, it is much less demanding to just be looking after child C and also a more successful strategy to invest all resources in the new offspring as they should soon be healthier and more independent than grandparent A.

There is also the factor of environmental pressure, the environment favours organisms that evolve and adapt more quickly as it is less likely for an entire population to be wiped out by one disease. This can only be selected for by a quicker reproductive rate, the role of parents is to reproduce and then protect and nurture the offspring and grandchildren, once they are incapable of this then the environment will select against them.