Do you consider this the most important presidential election of your lifetime? ?

For one reason only, president's can do a lot of damage with a willing Congress for 4-8 years. That can be reversed, but SCOTUS Justices are there until they retire by choice or die. Our Constitution is at stake if Hillary is elected.

This elections is the most important in my lifetime & am very concerned about both candidates

Sadly, yes. Every Presidential election is now the most important one of my lifetime. I wish it weren't so. I wish the government were shrunk back to its Constitutionally authorized size and then I wouldn't care so much about this election or any other. However, no that it intrudes into every aspect of my life, I have to be concerned that the reins of govt are not place in the hands of a tyrant or a criminal.